downward at 9.8 m/s ? 11. An object is pulled to the left by a force of SON. The same amount of force pulls it to the right. The object will A accelerate to the right C. change its direction B accelerate to the left at 12. A book rests on a table. The force of gravity puis dewn on the book with a force of 20 newions. What prevents the books from accelerating A. The table presses back up on the book with an equal and opposite force of 20 newtons B. The table and the book together are accelerating downwards at 9.8 m/s C. The table presses back up on the book with a force greater than 20 newtons. D. The inertia of the book holds it up. 13. Which statement is true about an object that is travelling in uniform circular motion? A The speed of the object varies B, The direction of the object's velocity is constant. C. The net force on the object is directed toward the center of the circular path D. The net force on the object is directed away from the center of the circular path. 14. A 50-kg object is acted upon by a net force of 360 N. How much does it accelerate? Use the formula a=F/m. A. 3.6 m/s2 B.7.2 m/s2 C. 9.8 m/s2 D. 19.6 m/s2 results is 15. When a pair of balanced forces acts on an object, the net force that A greater in size than one of the forces. B. equal to zero. C equal in size to one of the forces. 16. What law shows the need to use seat belts? A. Law of Inertia C. Law of Interaction P. Law of Acceleration D. Impulse - Momentum Theorem 17. Car A and Car B collide head-on. At every moment during collision, the magnitude of the force that Car A exerts on Car B is exactly equal to the magnitude of the force that Car B exerts on Car A. This is an example of A Law of Inertia C. Law of Interaction B. Law of Acceleration D. Impulse - Momentum Theorem 18. When air rushes out of a balloon and it moves upward. This is an example of which Law of Motion, A. Law of inertia C. Law of Interaction B. Law of Acceleration D. Impulse - Momentum Theorem 19. One way to increase acceleration is by A. decreasing force. C. decreasing mass. B. increasing mass. D. increasing both force and mass 20. Which of the following objects needs more force to start moving? A. Ping-Pong ball C. Basketball B Goif ball D. Bowling ball 21. A bus hits a bug and the bug splatters on the windshield, which force is greater? A. The Bus C. The Bug B. They are the same D. Gravity acting on the bus 22. When Manny got punched in the face what is the interaction pair? A The list and the face. C. Manny and media criticism. B. The fist and the air flow D. Manny and the floor. 23. An object is in uniform circular motion, which of the following is true? A. The acceleration is zero. B. The velocity points to the center C. The force points to the center. D. The velocity is constant.
