Are flashcards effective for AP Physics 1?

Yes. Flashcards use active recall — retrieving an answer from memory — which research shows is one of the most effective study methods, especially in short, spaced sessions. Because AP Physics 1 rewards instant recall of laws, formulas, and definitions, the cards are an efficient way to make that knowledge automatic before you apply it.

What topics do the AP Physics 1 flashcards cover?

All eight units: kinematics and motion graphs, Newton's laws and forces, work and energy, momentum and collisions, torque and rotation, rotational energy and angular momentum, simple harmonic motion, and fluids (density, pressure, buoyancy, and flow). Every card maps to the current College Board course.

How should I study with these AP Physics 1 flashcards?

Lead with the highest-weighted units — Force and Translational Dynamics and Work, Energy, and Power, which together are roughly 40% of the multiple-choice section. Mix the modes: flip to learn, type to test recall, match for speed, and quiz to check yourself before working full practice questions.

Are the AP Physics 1 flashcards free?

Yes — 100% free, all four study modes, no paywall.

Do these flashcards match the current AP Physics 1 course?

Yes. The cards are organized to the College Board's current AP Physics 1: Algebra-Based course, including Unit 8: Fluids, which was added in the 2024-25 redesign. So an older review deck without fluids would be incomplete — these are up to date.

A quantity with magnitude only and no direction — e.g. speed, distance, mass, time.

A quantity with both magnitude and direction — e.g. velocity, acceleration, force, displacement.

Distance vs. displacement

Distance is the total path length (scalar); displacement is the straight-line change in position with direction (vector).

Speed is how fast (scalar); velocity is speed with direction (vector).

Displacement divided by elapsed time: $\bar v = \dfrac{\Delta x}{\Delta t}$.

The rate of change of velocity: $a = \dfrac{\Delta v}{\Delta t}$. A vector.

Kinematic equation (velocity)

$v = v_0 + at$ — final velocity from initial velocity, acceleration, and time.

Kinematic equation (position)

$x = x_0 + v_0 t + \tfrac{1}{2}at^2$.

Kinematic equation (no time)

$v^2 = v_0^2 + 2a\,\Delta x$ — use when time is unknown.

Average velocity (constant a)

$\bar v = \dfrac{v_0 + v}{2}$ when acceleration is constant.

Motion under gravity alone (no air resistance), with downward acceleration $g \approx 9.8\ \text{m/s}^2$.

Acceleration due to gravity

$g \approx 9.8\ \text{m/s}^2$ near Earth's surface (often approximated as $10\ \text{m/s}^2$).

Slope of position-time graph

Gives the velocity at that instant.

Two-dimensional motion under gravity; horizontal and vertical components are analyzed independently.

Horizontal velocity of a projectile

Stays constant — there is no horizontal force (ignoring air resistance).

Vertical motion of a projectile

Free fall: accelerates downward at $g$, independent of horizontal motion.

Time of flight (level launch)

Set vertical displacement to zero and solve the vertical kinematic equation for $t$.

The coordinate system from which motion is measured; velocities add relative to it.

The velocity of one object measured from another: $\vec v_{AB} = \vec v_A - \vec v_B$.

Instantaneous velocity

Velocity at a single instant — the slope of the tangent to the position-time graph.

Motion at constant velocity (zero acceleration), shown as a straight line on a position-time graph.

Negative acceleration

Acceleration opposite to the velocity direction; it slows an object down (deceleration) if it's moving forward.

Displacement from average velocity

$\Delta x = \bar v\, t = \dfrac{v_0+v}{2}\,t$.

Components of a vector

A vector resolved into perpendicular parts: $A_x = A\cos\theta$, $A_y = A\sin\theta$.

Add component by component, or place them head-to-tail; the resultant is the closing side.

A push or pull, measured in newtons (N); a vector that can change an object's motion.

Inertia: an object stays at rest or moves at constant velocity unless acted on by a net external force.

Net force equals mass times acceleration: $F_{net} = ma$.

For every force, there is an equal and opposite reaction force acting on a different object.

An object's resistance to changes in its motion, measured by its mass.

The vector sum of all forces on an object; it determines the acceleration.

A state of zero net force, so the object has zero acceleration (at rest or constant velocity).

A diagram showing one object and every force acting on it as a labeled arrow.

The gravitational force on an object's mass: $W = mg$, measured in newtons.

Mass is the amount of matter (kg), constant everywhere; weight is the force of gravity (N), which varies.

The support force a surface exerts perpendicular to itself on an object.

A force opposing relative motion between surfaces in contact.

Friction on sliding surfaces: $f_k = \mu_k N$, opposing the motion.

Friction that resists the start of sliding, up to a maximum $f_s \le \mu_s N$.

Coefficient of friction

$\mu$: the ratio of the friction force to the normal force; depends on the surfaces.

The pulling force transmitted along a rope, string, or cable.

An external push or pull a person or object exerts directly.

Your FREE AP Physics 1 Flashcards 2026 – 200+ Cards

Realistic AP Physics 1 flashcards across all eight College Board units — flip, match, type, and quiz yourself on the laws, formulas, and quantities.

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AP Physics 1 Flashcards

Scalar: A quantity with magnitude only and no direction — e.g. speed, distance, mass, time.
Vector: A quantity with both magnitude and direction — e.g. velocity, acceleration, force, displacement.
Distance vs. displacement: Distance is the total path length (scalar); displacement is the straight-line change in position with direction (vector).
Speed vs. velocity: Speed is how fast (scalar); velocity is speed with direction (vector).
Average velocity: Displacement divided by elapsed time: $\bar v = \dfrac{\Delta x}{\Delta t}$ .
Acceleration: The rate of change of velocity: $a = \dfrac{\Delta v}{\Delta t}$ . A vector.
Kinematic equation (velocity): $v = v_0 + at$ — final velocity from initial velocity, acceleration, and time.
Kinematic equation (position): $x = x_0 + v_0 t + \tfrac{1}{2}at^2$ .
Kinematic equation (no time): $v^2 = v_0^2 + 2a\,\Delta x$ — use when time is unknown.
Average velocity (constant a): $\bar v = \dfrac{v_0 + v}{2}$ when acceleration is constant.
Free fall: Motion under gravity alone (no air resistance), with downward acceleration $g \approx 9.8\ \text{m/s}^2$ .
Acceleration due to gravity: $g \approx 9.8\ \text{m/s}^2$ near Earth's surface (often approximated as $10\ \text{m/s}^2$ ).
Slope of position-time graph: Gives the velocity at that instant.
Slope of velocity-time graph: Gives the acceleration.
Area under velocity-time graph: Gives the displacement.
Area under acceleration-time graph: Gives the change in velocity.
Projectile motion: Two-dimensional motion under gravity; horizontal and vertical components are analyzed independently.
Horizontal velocity of a projectile: Stays constant — there is no horizontal force (ignoring air resistance).
Vertical motion of a projectile: Free fall: accelerates downward at $g$ , independent of horizontal motion.
Time of flight (level launch): Set vertical displacement to zero and solve the vertical kinematic equation for $t$ .
Reference frame: The coordinate system from which motion is measured; velocities add relative to it.
Relative velocity: The velocity of one object measured from another: $\vec v_{AB} = \vec v_A - \vec v_B$ .
Instantaneous velocity: Velocity at a single instant — the slope of the tangent to the position-time graph.
Uniform motion: Motion at constant velocity (zero acceleration), shown as a straight line on a position-time graph.
Negative acceleration: Acceleration opposite to the velocity direction; it slows an object down (deceleration) if it's moving forward.
Displacement from average velocity: $\Delta x = \bar v\, t = \dfrac{v_0+v}{2}\,t$ .
Components of a vector: A vector resolved into perpendicular parts: $A_x = A\cos\theta$ , $A_y = A\sin\theta$ .
Adding vectors: Add component by component, or place them head-to-tail; the resultant is the closing side.
Force: A push or pull, measured in newtons (N); a vector that can change an object's motion.
Newton's first law: Inertia: an object stays at rest or moves at constant velocity unless acted on by a net external force.
Newton's second law: Net force equals mass times acceleration: $F_{net} = ma$ .
Newton's third law: For every force, there is an equal and opposite reaction force acting on a different object.
Inertia: An object's resistance to changes in its motion, measured by its mass.
Net force: The vector sum of all forces on an object; it determines the acceleration.
Equilibrium: A state of zero net force, so the object has zero acceleration (at rest or constant velocity).
Free-body diagram: A diagram showing one object and every force acting on it as a labeled arrow.
Weight: The gravitational force on an object's mass: $W = mg$ , measured in newtons.
Mass vs. weight: Mass is the amount of matter (kg), constant everywhere; weight is the force of gravity (N), which varies.
Normal force: The support force a surface exerts perpendicular to itself on an object.
Friction: A force opposing relative motion between surfaces in contact.
Kinetic friction: Friction on sliding surfaces: $f_k = \mu_k N$ , opposing the motion.
Static friction: Friction that resists the start of sliding, up to a maximum $f_s \le \mu_s N$ .
Coefficient of friction: $\mu$ : the ratio of the friction force to the normal force; depends on the surfaces.
Tension: The pulling force transmitted along a rope, string, or cable.
Applied force: An external push or pull a person or object exerts directly.
Third-law pair: Two forces equal in magnitude, opposite in direction, same type, acting on two different objects.
Inclined plane forces: Resolve weight into components parallel ( $mg\sin\theta$ ) and perpendicular ( $mg\cos\theta$ ) to the surface.
Apparent weight: The normal force you feel; it exceeds $mg$ when accelerating upward and is less when accelerating downward.
Centripetal acceleration: Inward acceleration in circular motion: $a_c = \dfrac{v^2}{r}$ .
Centripetal force: The net inward force keeping an object in a circle: $F_c = \dfrac{mv^2}{r}$ .
Direction of centripetal force: Always toward the center of the circular path.
Centrifugal force: An apparent outward 'force' — actually just inertia; not a real force in an inertial frame.
Uniform circular motion: Motion in a circle at constant speed, with constant-magnitude inward acceleration.
Newton's law of gravitation: $F = \dfrac{Gm_1 m_2}{r^2}$ : every mass attracts every other mass.
Gravitational field: $g = \dfrac{F}{m}$ : force per unit mass; near Earth's surface $g \approx 9.8\ \text{N/kg}$ .
Orbital motion: An orbit is free fall where gravity supplies the centripetal force keeping the object circling.
Translational equilibrium: $\sum F = 0$ in every direction; the object is not accelerating.
Acceleration direction: Always in the direction of the net force (Newton's second law).
Force units: The newton (N), where $1\ \text{N} = 1\ \text{kg}\cdot\text{m/s}^2$ .
System vs. object: Choosing what to analyze: forces internal to a system cancel; only external forces change its motion.
Work: Energy transferred by a force through a displacement: $W = Fd\cos\theta$ .
Work by a perpendicular force: Zero — a force at right angles to the motion does no work.
Joule: The SI unit of energy and work: $1\ \text{J} = 1\ \text{N}\cdot\text{m}$ .
Kinetic energy: The energy of motion: $KE = \tfrac{1}{2}mv^2$ .
Work-energy theorem: Net work equals the change in kinetic energy: $W_{net} = \Delta KE$ .
KE depends on speed squared: Doubling the speed quadruples the kinetic energy ( $KE \propto v^2$ ).
Potential energy: Stored energy of position or configuration.
Gravitational potential energy: $PE_g = mgh$ , relative to a chosen reference height.
Elastic (spring) potential energy: $PE_s = \tfrac{1}{2}kx^2$ , where $x$ is the stretch or compression.
Hooke's law: The spring force is proportional to displacement: $F = -kx$ .
Spring constant: $k$ : the stiffness of a spring, in N/m; larger $k$ means a stiffer spring.
Mechanical energy: The sum of kinetic and potential energy: $E = KE + PE$ .
Conservation of mechanical energy: When only conservative forces act, $KE + PE$ stays constant.
Conservative force: A force (like gravity or a spring) whose work is path-independent and stores recoverable energy.
Nonconservative force: A force (like friction) that removes mechanical energy, converting it to heat.
Conservation of energy: Total energy is never created or destroyed, only converted between forms.
Energy lost to friction: Mechanical energy converted to thermal energy: $W_{friction} = f\,d$ .
Power: The rate of doing work or transferring energy: $P = \dfrac{W}{t}$ .
Power from force and velocity: $P = Fv$ when force is along the velocity.
Watt: The SI unit of power: $1\ \text{W} = 1\ \text{J/s}$ .
Falling-object energy: Gravitational PE converts entirely to KE: $mgh = \tfrac{1}{2}mv^2$ , so $v = \sqrt{2gh}$ .
Energy bar chart: A diagram tracking how KE and PE trade off while their sum stays constant.
Work done by gravity: $W = mgh$ (positive when falling, negative when rising); path-independent.
Net work and speed: Positive net work speeds an object up; negative net work slows it down.
Energy is a scalar: Energy has magnitude but no direction; it is added algebraically, not as a vector.
Reference level for PE: An arbitrary chosen height where gravitational PE is defined as zero; only changes in PE matter.
Linear momentum: The product of mass and velocity: $p = mv$ . A vector.
Momentum units: $\text{kg}\cdot\text{m/s}$ .
Impulse: The product of force and the time it acts: $J = F\Delta t$ .
Impulse-momentum theorem: Impulse equals the change in momentum: $F\Delta t = \Delta p$ .
Impulse as area: On a force-time graph, the impulse equals the area under the curve.
Why airbags reduce force: They increase the collision time $\Delta t$ , lowering the force for the same $\Delta p$ .
Conservation of momentum: With no net external force, total momentum before equals total momentum after.
Momentum in collisions: Total momentum is conserved in every collision (when external forces are negligible).
Elastic collision: Both momentum and total kinetic energy are conserved; objects bounce apart.
Inelastic collision: Momentum is conserved but kinetic energy is not — some becomes heat, sound, or deformation.
Perfectly inelastic collision: Objects stick together and move as one; maximum kinetic energy is lost.
Explosion: Reverse of a perfectly inelastic collision: total momentum stays zero if it began at rest.
Two-body collision equation: $m_1 v_1 + m_2 v_2 = m_1 v_1' + m_2 v_2'$ .
Recoil: When two objects push apart, equal and opposite momenta keep total momentum constant.
Momentum is a vector: Direction matters: opposite velocities subtract when finding total momentum.
Center of mass: The average position of a system's mass; it moves as if all mass and external force acted there.
Internal vs. external forces: Internal forces cancel in pairs; only external forces change total momentum.
Relating impulse and KE: Impulse changes momentum; work changes kinetic energy — different theorems for different questions.
Force from momentum change: $F = \dfrac{\Delta p}{\Delta t}$ — the average force during a collision.
Stopping a moving object: Requires an impulse equal and opposite to its momentum.
Inelastic collision energy: Kinetic energy decreases; compute the loss as $KE_{before} - KE_{after}$ .
Momentum and Newton's second law: Newton's second law in its general form is $F = \dfrac{\Delta p}{\Delta t}$ .
Equal-mass elastic head-on: Two equal masses exchange velocities in a one-dimensional elastic collision.
Closed (isolated) system: A system with no external forces, so its total momentum is conserved.
Angular displacement: The angle through which an object rotates, measured in radians (symbol $\theta$ ).
Angular velocity: The rate of rotation, in rad/s (symbol $\omega$ ).
Angular acceleration: The rate of change of angular velocity, in rad/s² (symbol $\alpha$ ).
Linear–angular speed link: $v = r\omega$ : a point's linear speed equals radius times angular velocity.
Rotational kinematics: The angular equations mirror the linear ones, e.g. $\omega = \omega_0 + \alpha t$ .
Torque: The rotational effect of a force: $\tau = rF\sin\theta$ .
Lever arm: The perpendicular distance from the axis to the line of the force; a longer lever arm gives more torque.
Maximizing torque: Apply force far from the axis and perpendicular to the lever arm ( $\sin 90^\circ = 1$ ).
Torque units: The newton-meter ( $\text{N}\cdot\text{m}$ ).
Rotational equilibrium: Zero net torque, so no angular acceleration (the basis of balanced-beam problems).
Static equilibrium: Both net force and net torque are zero; the object neither translates nor rotates.
Moment of inertia: Resistance to changes in rotation — the rotational analog of mass (symbol $I$ ).
Moment of inertia depends on: Both the total mass and how that mass is distributed about the axis.
Mass farther from axis: Increases the moment of inertia, making the object harder to spin up.
Rotational Newton's second law: $\tau_{net} = I\alpha$ : net torque equals moment of inertia times angular acceleration.
Rotational analog of mass: Moment of inertia $I$ plays the role that mass $m$ plays in $F = ma$ .
Hoop vs. disk inertia: For equal mass, a hoop (mass on the rim) has a larger $I$ than a solid disk.
Axis of rotation: The line about which an object turns; torque and moment of inertia are defined relative to it.
Sign of torque: Counterclockwise torque is conventionally positive, clockwise negative.
Balancing torques: On a seesaw, $r_1 F_1 = r_2 F_2$ when balanced about the pivot.
Radian: The natural angle unit: $2\pi$ radians = one full revolution = $360^\circ$ .
Tangential acceleration: $a_t = r\alpha$ : the linear acceleration of a point due to angular acceleration.
Rotational kinetic energy: $KE_{rot} = \tfrac{1}{2}I\omega^2$ — the rotational twin of $\tfrac{1}{2}mv^2$ .
Total KE of a rolling object: Translational plus rotational: $\tfrac{1}{2}mv^2 + \tfrac{1}{2}I\omega^2$ .
Rolling without slipping: The contact point doesn't slide, so $v = r\omega$ .
Rolling down a ramp: Gravitational PE splits between translational and rotational KE, so it's slower than sliding.
Which object rolls fastest: The one with the smallest $I$ relative to its mass (a solid sphere beats a hoop).
Angular momentum: The rotational analog of momentum: $L = I\omega$ .
Angular momentum units: $\text{kg}\cdot\text{m}^2/\text{s}$ .
Conservation of angular momentum: With no external torque, $L = I\omega$ stays constant.
Spinning-skater effect: Pulling arms in lowers $I$ , so $\omega$ rises to conserve $L$ .
Skater's KE increase: Pulling the arms in does work, so rotational KE increases even though $L$ is unchanged.
Torque and angular momentum: Net external torque equals the rate of change of angular momentum: $\tau = \dfrac{\Delta L}{\Delta t}$ .
Angular momentum is a vector: It has a direction along the axis of rotation (right-hand rule).
Why a top stays upright: Its angular momentum resists changes in the axis's direction.
Linear vs. angular momentum: Linear $p = mv$ is conserved without external force; angular $L = I\omega$ without external torque.
Rotational work: $W = \tau\theta$ : work done by a torque through an angle.
Rotational power: $P = \tau\omega$ : the rate of rotational work.
Combined energy conservation: For rolling, set $mgh = \tfrac{1}{2}mv^2 + \tfrac{1}{2}I\omega^2$ with $v = r\omega$ .
Collisions of rotating systems: Angular momentum is conserved when two rotating objects interact with no external torque.
Simple harmonic motion: Oscillation where the restoring force is proportional to displacement: $F = -kx$ .
Restoring force: A force directed back toward equilibrium that drives an oscillation.
Amplitude: The maximum displacement from equilibrium in an oscillation.
Period: The time for one complete oscillation (symbol $T$ ).
Frequency: The number of cycles per second: $f = \dfrac{1}{T}$ , in hertz (Hz).
Mass-spring period: $T = 2\pi\sqrt{\dfrac{m}{k}}$ — depends only on mass and stiffness.
Pendulum period: $T = 2\pi\sqrt{\dfrac{L}{g}}$ — depends only on length and gravity.
Period and amplitude: In SHM the period does not depend on the amplitude.
Speed in SHM: Greatest at the equilibrium position, zero at the turning points.
Acceleration in SHM: Greatest at maximum displacement, zero at equilibrium.
Energy at equilibrium (SHM): All kinetic — the spring is at natural length, so elastic PE is zero.
Energy at the extremes (SHM): All potential — the object is momentarily at rest, so kinetic energy is zero.
Conditions for SHM (pendulum): Only small-angle swings behave as simple harmonic motion.
Angular frequency: $\omega = 2\pi f = \dfrac{2\pi}{T}$ : the rate of phase change in SHM.
Density: Mass per unit volume: $\rho = \dfrac{m}{V}$ .
Density units: $\text{kg/m}^3$ (or g/cm³); water is $1000\ \text{kg/m}^3$ .
Pressure: Force per unit area: $P = \dfrac{F}{A}$ .
Pascal: The SI unit of pressure: $1\ \text{Pa} = 1\ \text{N/m}^2$ .
Pressure with depth: Gauge pressure in a static fluid: $P = \rho g h$ .
Pressure depends on depth: Not on container shape or total volume — only on depth and fluid density.
Buoyant force: The upward force on an object in a fluid: $F_b = \rho V g$ .
Archimedes' principle: The buoyant force equals the weight of the fluid displaced.
Condition to float: An object floats when it is less dense than the fluid (or buoyant force ≥ weight).
Condition to sink: An object sinks when it is denser than the fluid.
Floating object: Displaces a weight of fluid exactly equal to its own weight.
Continuity equation: For incompressible steady flow, $A_1 v_1 = A_2 v_2$ — volume flow rate is constant.
Narrow pipe and speed: A smaller cross-section forces the fluid to move faster (continuity).
Bernoulli's principle: Faster-moving fluid has lower pressure (in steady, incompressible flow).
Hydraulic lift: Pascal's principle: a small input force on a small piston yields a large output force on a large piston.
Pascal's principle: Pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid.
Free fall is independent of mass: All objects fall with the same acceleration $g$ regardless of mass (ignoring air resistance).
Position at rest: An object at rest has zero velocity but can still have acceleration (e.g. at the top of a toss).
Equilibrant force: The single force that would put a system in equilibrium — equal and opposite to the net force.
Two-body system on a pulley (Atwood): Treat both masses as one system: $a = \dfrac{(m_1 - m_2)g}{m_1 + m_2}$ .
Banked curve: A tilted road where the normal force's horizontal component helps supply centripetal force.
Terminal velocity: The constant speed reached when drag force balances weight, so net force and acceleration are zero.
Negative work: Work done by a force opposing the motion (like friction), removing kinetic energy.
Energy efficiency: Useful energy output divided by total energy input; always less than 100% due to losses.
Work-energy vs. kinematics: Use energy when you care about speeds and distances, not times.
Power and time: For the same work, more power means the work is done in less time.
Impulse direction: Impulse is a vector in the direction of the average force and the momentum change.
Ballistic pendulum: A projectile embeds in a block: momentum conserved in the collision, energy conserved in the swing.
Force-time graph area: Equals the impulse delivered, which equals the change in momentum.
Recoil of a gun: The gun's backward momentum equals the bullet's forward momentum (total stays zero).
Rotational inertia of a point mass: $I = mr^2$ for a single mass at distance $r$ from the axis.
Couple: A pair of equal, opposite, non-collinear forces producing pure rotation (net force zero, net torque nonzero).
Conservation in figure skating: Pulling arms in conserves angular momentum, increasing spin rate.
Why a wheel resists tipping: Its angular momentum stabilizes the direction of its spin axis (gyroscopic effect).
Damped oscillation: An oscillation whose amplitude decreases over time due to friction or drag.
Pressure and force on a surface: $F = PA$ : pressure times area gives the force a fluid exerts on a surface.

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By Career EmployerUpdated Sep 12, 2026

200+ free AP Physics 1 flashcards — 4 ways to study

AP Physics 1 Flashcard of the DayNew daily

The classic card. Do you know this one?

Click Study Flashcards above to open the flashcard hub — 200 AP Physics 1 cards you can flip, match, type, or quiz yourself on. Every card is drawn from the College Board AP Physics 1 units, so you study exactly what the exam measures.^[1] Pair them with our free practice test and study guide.

AP Physics 1 is one of the 17 AP exams — explore our AP flashcards to compare and prep across the whole family.

AP Physics 1 Flashcard Study Modes

Flip mode is the quiet study pass: read the term, think, then turn the card. Match is a timed game that pairs terms with definitions under pressure. Type shows a definition and asks you to spell the term back, so a card like Impulse as area has to come from memory. Quiz builds multiple-choice questions straight from the same 200 cards.

Free AP Physics 1 flashcards from Career Employer — active recall for every College Board unit

Why Flashcards Work for AP Physics 1

Unit 2: Force and Translational Dynamics is the heaviest block at 36 cards, drilling the vocabulary behind Newton’s laws and free-body reasoning, from Inertia and Net force to Tension, with support cards such as Equilibrium and Force units. Unit 1: Kinematics follows with 30 cards on describing motion before any force appears, where Scalar, Vector, and Free fall set the language and cards like Reference frame and Uniform motion keep the definitions precise.

Unit 3: Work, Energy, and Power also holds 30 cards, mixing quantities with their units and conditions: Work, Joule, and Watt sit beside Hooke’s law and Negative work, so you can say not just what energy is but when the sign flips. Unit 4: Linear Momentum brings 28 cards on collisions and conservation, including Impulse, Center of mass, and Impulse as area, plus scenario prompts such as Recoil of a gun.

Unit 5: Torque and Rotational Dynamics carries 24 cards that rebuild the linear ideas around an axis, with Lever arm, Sign of torque, and Axis of rotation defining how rotation is measured. Unit 6: Energy and Momentum of Rotating Systems adds 20 cards on what happens once things spin, from Angular momentum and Rotational work to explanation cards like Spinning-skater effect and Why a top stays upright.

Unit 8: Fluids contributes 17 cards on pressure and floating, including Buoyant force, Hydraulic lift, and Condition to sink alongside unit cards such as Pascal. Unit 7: Oscillations closes the deck with 15 cards on periodic motion, where Restoring force, Pendulum period, and Angular frequency tie simple harmonic motion back to the force and energy definitions you met earlier.

AP Physics 1 rewards instant recall of laws, formulas, and definitions before you apply them to problems.^[2] Spaced flashcards are the most efficient way to make that knowledge automatic, freeing your working memory for the reasoning the free-response section demands. Used alongside our practice test and study guide, they turn review time into measurable progress.

AP Physics 1 Flashcards by Unit

The cards are organized by the eight College Board units. Drill the highest-weighted ones first — Force and Translational Dynamics and Work, Energy, and Power together are roughly 40% of the multiple-choice section:^[1]

AP Physics 1 flashcards by College Board unit
Unit	Content
Unit 1	Kinematics
Unit 2	Force and Translational Dynamics
Unit 3	Work, Energy, and Power
Unit 4	Linear Momentum
Unit 5	Torque and Rotational Dynamics
Unit 6	Energy and Momentum of Rotating Systems
Unit 7	Oscillations
Unit 8	Fluids

How to Get the Most Out of These Flashcards

Start with forces. Unit 2: Force and Translational Dynamics is the largest block at 36 cards, and its definitions feed energy, momentum, and rotation, so clearing it first pays off everywhere else.
Type the slippery ones. Definitions you can recognize but not state belong in Type mode, especially Hooke’s law and Restoring force, where a vague answer signals a shaky mental model.
Match the unit cards. Timed pairing suits short unit terms like Force units, Momentum units, and Angular momentum units, because recognition speed is exactly what those cards should build.
Switch when Quiz stabilizes. Once Quiz scores stay high across Unit 3: Work, Energy, and Power and Unit 4: Linear Momentum, move to the practice test for multi-step problems cards cannot ask.
Rotate in small sets. Take one unit per sitting, re-Flip the previous unit’s misses before starting the next, and let all 200 cards come around again more than once.

AP Physics 1 Flashcards FAQ

Two hundred free AP Physics 1 flashcards, organized across all eight College Board units — Kinematics; Force and Translational Dynamics; Work, Energy, and Power; Linear Momentum; Torque and Rotational Dynamics; Energy and Momentum of Rotating Systems; Oscillations; and Fluids. They're free with no account required.

References

1.College Board. “AP Physics 1: Algebra-Based Course and Exam Description.” College Board. ↑
2.College Board. “AP Physics 1: Algebra-Based — AP Students.” College Board. ↑
3.College Board. “AP Physics 1: Algebra-Based Exam — AP Central.” College Board. ↑

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