HESI A2: Physics (Quiz 2) Welcome to your HESI A2 Practice Quizzes. Note: We designed FIVE (5) sets of practice quizzes for this Domain. Each set has 30 questions. Domain 6 (quiz 2): Physics. (30 questions) Please click NEXT to start your Free HESI Practice Quizzes right away. Best of Luck! 1. A fan that was rotating at a speed of 450 revolutions per second for 5 minutes had its speed setting turned down to 240 revolutions per second after 5.5 minutes. What is the angular acceleration over this period of time? 420 rev/min² -420 rev/min² 7 rev/min² -7 rev/min² None 2. A wave travels 36 m/s and has a wavelength of 5.3 m. What would be the frequency of the wave? 0.15 Hz 4.37 Hz 6.79 Hz 0.83 Hz None 3. What are the three elements that are influenced in magnetic fields? Aluminium, Nickel, Cobalt Iron, Nickel, Cobalt Aluminium, Iron, Cobalt Iron, Nickel, Aluminium None 4. Which of the following forces is a type of contact force that opposes the motion of a body when it comes in contact with another surface? Magnetic force Normal force Electric force Frictional force None 5. A 4.5 m tall object is placed 1.4 m away from a convex mirror and has an image height of 3.5 m. What is the image distance? -1.09 m -1.79 m 1.09 m -0.54 m None 6. A circuit consists of 5 identical light bulbs with 80 Ohm resistance each. If the bulbs are placed in a series and then wired to a 120 V power supply, what would be the current flowing in the circuit 3.33 A 3 A 0.3 A 0.03 A None 7. A person jumps in the air. When they reach their peak height, they are 0.65m off of the ground. The person as a mass of 83 kg. What is their gravitational potential energy? 515 J 530 J 545 J 560 J None 8. A box of mass 72 kg is moving across an uneven surface. If the frictional force experienced by the block is 565 N, what is the coefficient of friction between the box and the surface? μ = 1.2 μ = 0.3 μ = 0.8 μ = 0.7 None 9. A bicycle’s wheels are moving at a speed of 0.78 revolutions per second. The cyclist sees a log in the road and brakes, slowing the bicycle to 0.05 revolutions per second over 4 seconds. What is the angular acceleration of the bicycle wheel? -2.9 rev/s² 2.9 rev/s² -0.18 rev/s² 0.18 rev/s² None 10. Arrange the following frictional forces in decreasing order of their strength: static, sliding, rolling. Rolling friction > Sliding friction > Static friction Static friction > Sliding friction > Rolling friction Static friction > Rolling friction > Sliding friction Sliding friction > Static friction > Rolling friction None 11. A baseball that weighs 0.125 kg is thrown at 40.1 m/s. What is the Kinetic Energy of the ball? 201 J 101 J 5.0 J 2.5 J None 12. Which of the following is an example of a vector quantity? Distance Speed Velocity Time None 13. Which of the following is the name of the force acting on a body in circular motion that is directed away from the center? Centripetal Force Centrifugal Force Nuclear Force Electrical Force None 14. A LED light bulb with 120 Ohm resistance is powered by a 220 Volt power source. What is the current being drawn? 18.3 A 5.5 A 0.55 A 1.83 A None 15. A rocket travels horizontally for 3 minutes at 160 m/s before it hits its target. How far is the target from the point where the rocket was launched? 28,800 m 480 m 14,400 m 240 m None 16. What is the force of attraction between two objects, if Object 1 has a mass of 2.5 kg and Object 2 as a mass of 5.5 kg if the objects are placed 4.5 m apart? 2.3 x 10^-11 N 4.5 x 10^-11 N 9.0 x 10^-11 N 2.0 x 10^-10 N None 17. Two opposing forces are acting upon a book. If the magnitude of both forces is 50 N, in which direction will the book move? And what is the value of the net force and on the book? (Assume the book is lying on a frictionless surface) The book will move to the left and Fnet = 100 N The book will not move, and Fnet = 100 N The book will not move, and Fnet = 0 N The book will move to the right and Fnet = 100 N None 18. A box is lying on a table. Two forces of values 150 N and 235 N act on the box in the same direction (to the left). What is the resultant force on the box lying on the table? (Assume the table to be frictionless) 85 N to the left 85 N to the right 385 N to the right 385 N to the left None 19. If a 1.5 m painting is placed 1.5 m away from a convex mirror that has a focal length of 1.75 m, what is the image distance of the painting? 1.25 m 3.0 m 10 m -10 m None 20. A motorcycle’s velocity at the top of a hill is 20 m/s. Four seconds later, it reaches the bottom of the hill with a velocity of 52 m/s. What was the magnitude of the motorcycle’s acceleration? 9 m/s² 11 m/s² 8 m/s² 10 m/s² None 21. An object of mass 53 kg is on the ground. If the coefficient of friction between the object and the ground is 0.7, what is the frictional force on the object? 450.91 N 519.4 N 363.58 N 243.12 N None 22. Which of the following statements describes Newton’s second law of motion? The acceleration of an object is directly proportional to the external force on the body. For a body of constant mass, its acceleration is inversely proportional to the external force acting on it. None of these The rate of change of momentum of a body is equal to the rate of change of external force acting on it. None 23. A basket of oranges sits on a table. The basket has 58.6 J of gravitational Potential Energy and the table is 1.25 m high. What is the mass of the basket? 4.32 kg 4.65 kg 4.78 kg 4.98 kg None 24. The tendency of an object in motion to remain in motion is referred to as which of the following? Inertia Mass Force Balance None 25. A train travels a distance of 1,500 meters in 150 seconds. What is the average speed of the train? 10 m/s 0.1 m/s 15 m/s 225,000 m/s None 26. A 100 g tennis ball attached to a string is rotated about a 3 meter radius. If the ball’s velocity is approximately 9 m/s, how much force is being generated? 3.0 N 0.9 N 2.7 N 3.9 N None 27. A car moving at 45 m/s accelerates uniformly to a speed of 117 m/s in 12 minutes. What is the acceleration of the car? 0.5 m/s² 0.1 m/s² 0.3 m/s² 0.2 m/s² None 28. A golf ball is struck and leaves the ground at 24 m/s at a 60° angle above the horizontal. How far will it travel horizontally after 15 seconds? 120 m 360 m 180 m 200 m None 29. “A boy jumps from the ground applying a force on the ground, at the same time the ground applies an upward force which is equal to the magnitude of the force applied by the boy. This is what propels the boy in the air.” Which of the following laws describe this phenomenon? Newton’s second law of motion Newton’s first law of motion Newton’s third law of motion Newton’s universal law of gravitation None 30. A puma runs a distance of 840 meters in 40 seconds. What is the average speed of the puma? 23 m/s 21 m/s 20 m/s 19 m/s None 1 out of 30 Time is Up! Time's up
