HESI A2: Physics (Quiz 4) 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 4): Physics. (30 questions) Please click NEXT to start your Free HESI Practice Quizzes right away. Best of Luck! 1. An object travels a distance of 300 km in 30 min. What is the average speed of the object? 167 m/s 166.67 m/s 160 m/s 170 m/s None 2. The average speed of an athlete is 3.5 m/s. What is the distance traveled by the athlete in 70 seconds? 245 m 200 m 350 m 20 m None 3. A motorcycle has an initial velocity of at 49 m/s at the bottom of a hill. Seven seconds later, it reaches the top of the hill with a final velocity of 21 m/s. What was the acceleration of the motorcycle? -3 m/s² -4 m/s² -5 m/s² -2 m/s² None 4. An object traveling at 18 m/s starts to decelerate steadily. It comes to a complete stop in 3 seconds. What is its acceleration? -8 m/s² -6 m/s² -7 m/s² -5 m/s² None 5. A particle is projected at an angle of 56° above the horizontal with an initial velocity of 130 m/s. How far will it travel horizontally 4 minutes after being projected? 290.78 m 17,472 m 17,010 m 520 m None 6. A body falls freely from rest. What is the distance it falls in 40 seconds? 196 m 15,680 m 7,840 m 400 m None 7. Two forces of magnitudes 136 N and 145 N act upon a box in the same direction. The box has a mass of 25 kg. What is the acceleration of the box? (Ignore the effects of friction) 0.36 m/s² 11.24 m/s² 2.78 m/s² 0.09 m/s² None 8. Two forces are acting upon an object of mass 50 kg. One of the forces has a magnitude of 234 N and is acting to the right. The other force has a magnitude of 546 N and is acting to the left. What is the acceleration of the object? (Ignore effects of friction) 6.24 m/s² to the left 15.6 m/s² to the right 6.24 m/s² to the right 15.6 m/s² to the left None 9. An object of mass 552 g is moving across a surface and experiences a frictional force of 1.6 N. What is the coefficient of friction between the object and the surface it is moving across? μ = 0.35 μ = 0.3 μ = 0.45 μ = 0.4 None 10. A car is moving on a road and experiences a frictional force of 7,644 N. If the coefficient of friction between the car and the road is 0.6, what is the car’s mass? 1,300 kg 1,475 kg 990 kg 1,576 kg None 11. A car drives in a circle in a radius of 145 m and travels 678 m. What is the angular displacement of the car? 678 4.7 0.21 98,310 None 12. What two parameters are necessary to calculate angular displacement? Acceleration and circle radius Circle radius and velocity Arc length and circle radius Velocity and arc length None 13. A car of 900 kg mass is driven around a circular race track of 600 m radius at a constant velocity of 220 km/h. What is the centripetal force acting on the car? 91. 67 N 69. 82 N 85.75 N 70.54 N None 14. A 100 g tennis ball attached to a string is rotated about a 3 meter radius. If the string broke when it was at 15 N of tension, how fast was the ball moving? 33.65 m/s 21.21 m/s 27.45 m/s 25.15 m/s None 15. Energy, both Kinetic and Potential, are expressed in what units? Kilometers Joules Meters/second Kilograms None 16. A person has a mass of 76 kg. What is this person’s weight on Earth? 455 N 820 N 745 N 690 N None 17. A cyclist weighs 60 kg, and her bicycle weighs 6.8 kg. What is the momentum of the cyclist when riding her bike at 4 m/s southward? 240 kg m/s south 267.2 kg m/s south 27.2 kg m/s south 16.7 kg m/s south None 18. A 2 kg dog runs southwest at a velocity of 1.5 m/s. What is its momentum? 4.5 kg m/s southwest 2 kg m/s southwest 3.0 kg m/s southwest 2.5 kg m/s southwest None 19. If a basketball bounces 15 times every 20 seconds, what is its frequency? 0.2 Hz 0.75 Hz 1.33 Hz 3 Hz None 20. If a patient breathes 720 times in 60 minutes, what is the breathing period of this patient in seconds? 12 s 8.3 s 5 s 0.083 s None 21. If an object is magnified by a factor of 2 in a convex lens and has an image height of 4.5 cm, what is the height of the object? 2.25 cm 9.0 cm 0.44 cm 45 cm None 22. If the speed of light is 2.0 x 108 m/s in glass, what is the index of refraction for glass? 1.5 1.33 1.67 0.67 None 23. Two balloons carrying charges of 5 μC and 8μC are 25 cm apart. Determine the magnitude of the force between them. 4.75 N 6.69 N 5.76 N 3.24 N None 24. Two point-like charges carrying charges of + 0.5 μC and – 0.4 μC are 2 m apart. Determine the magnitude of the force between them. 65 x 10^-5 N 55 x 10^-5 N 45 x 10^-5 N 75 x 10^-5 N None 25. A ball is kicked off the edge of a roof that is 34 meters tall. The horizontal speed given to the ball is 12.5 m/s. If there is no air resistance, how far out from the base of the building will the ball land 30.80 m 19.35 m 28.44 m 32.86 m None 26. Acceleration due to Earth’s gravity is -9.8 m/s2. Which part of this number gives the information on direction, making it a vector quantity? We know it is a vector quantity because the seconds are squared in the units. We know it is a vector quantity because the negative sign tells us the acceleration is upward. We know it is a vector quantity because the negative sign tells us the acceleration is downward. We know it is a vector quantity because the negative sign tells us the magnitude of the acceleration. None 27. Which of the following is a scalar quantity? 10 steps up 10 miles north 10 paces 10 yards to the right None 28. A track team is warming up. They jog around the track (1/4 mile) three times and finish exactly where they started. Which of the following statements it true? Their displacement is 0 miles and their distance traveled is ¾ mile. Their displacement is 0 mile and their distance traveled is also 0 mile. Their displacement is ¾ mile and their distance traveled is 0 miles. Their displacement is ¾ mile and their distance traveled is also ¾ mile. None 29. A man jumps out of an airplane with a parachute. When he opens his parachute, he is plummeting to the ground at a rate of 100 mph. When he touches the ground 5 minutes later, he lands at a comfortable 10mph. What is his average acceleration during this time? 18 miles/hour -1080 miles/hour -18 miles/hour 1080 miles/hour None 30. Chester walked from his house to his friend’s house which is 140 meters from his house to the right. They decide to go to a café for lunch which is down the street, left of Chester’s house 50 meters. They walk to the café together and pass by Chester’s house. Which of the following statements is true when they are at the café? Chester’s distance traveled and his displacement are both greater than his friend’s respective quantities. Chester’s distance traveled is less than his friend’s distance traveled but his displacement is greater than his friend’s. displacement Chester’s distance traveled is greater than his friend’s distance traveled but his displacement is less than his friend’s displacement. Chester’s distance traveled and his displacement are both less than his friend’s respective quantities. None 1 out of 30 Time is Up! Time's up
