Question

8 When an object experienices unicem cinsular motion, the direction of the net fonce is b. in the opposite direction of the motion of the objoct d. is directed sway from the center of the ciculr path 9. Compared to its mass on the Farth, the mass of an object on the Moon is less b. more c the same d half as moch 10. Can work be done on a system if there is no motion? b. yes, since motion is only relative no, since a system which is not moving has no energy no, because of the way work is defined c. d. 11. Describe the energy of a car driving up a hill a entirely kinetic b. entirely potential c. both kinetic and potential d. gravitational 12. The quantity Fe d/t is the kinetic energy of the object a. b. c. d. the potential energy of the object the work done on the object by the force the power supplied to the object by the foroe 13. Two objects collide and bounce off each other. Linear momentum a. is definitely conserved b. is definitely not conserved is conserved only if the collision is elastic d. is conserved only if the environment is frictionless c. 14. When is kinetic energy conserved? a in elastic collisions b. in inelastic collisions e. in any collision in which the objects do d. in all collisions not stick together 15. A boy and a girl are riding on a merry-go-round which is he outer edge, and the girl is closer to the center. Who has the turning at a constant rate. The boy is near speed? greater linear a. the boy b. the girl c. both have the same non-zero translational velocity d. both have zero translational velocity

Answer 1

8. option (c) is correct

9. option (c) is correct

10. option (b) is correct

11. option (c) is correct

12. option (d) is correct

13. option (d) is correct

14. option (a) is correct

15. option (a) is correct

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