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9. If you apply a 10N force on a 5kg mass. What is the resulting acceleration? A 20 m/s B. 2 m/s C. 0.2 m/s D. 0.02 m/s 10. Pedro raised a balikbayan box above the ground. If he lifts the same box twice as high, which of the following statements is true? A. The potential energy of the box increases four times. B. The potential energy of the box is doubled. C. The potential energy of the box is halved. D. There is no change in potential energy. 11. A 500-N lady sits on the floor. How much force the floor exerts on her? A. 50 N B. 250 N C. 500 N D. 1000 N
12. Mario and Juan are both elevated at the same height. Mario is twice as massive as Juan. Which of the following statement correctly describes the two? A. Juan and Mario have the same potential energy B. Juan has greater potential energy than Mario. C. Mario has greater potential energy than Juan. D. The given is incomplete to tell.
13. Which has the greatest kinetic energy in the following situations? A. a 60 kg car at rest B. a 60 kg man moving 3 m/s C. a 60 kg horse moving 6 m/s D. a 60 kg carabao moving 9 m/s
14. What are the factors that affect kinetic energy? 1. time II. mass III. speed IV. power A. I and II B. II and III C. III and IV D. I and IV
15. How will you decrease the kinetic energy of an object moving at a constant speed of 20 m/s? A. decrease its mass B. increase its mass C. decrease its speed D. increase its speed
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