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MDCAT - Practice Test - Physics - Work and Energy Quiz

Attempt 10 MCQs on MDCAT - Practice Test - Physics - Work and Energy | Quiz 6

51. A 2 kg object speeds up from 5 m/s to 10 m/s. Work done on it is:



52. A ball is dropped from height h. What is its KE just before hitting ground (no air resistance)?



53. In an inelastic collision, which is conserved?



54. In an elastic collision, which quantities are conserved?



55. Energy stored in a compressed spring is:



56. What does the area under a force-displacement graph represent?



57. What does the slope of a work-time graph represent?



58. In real machines, efficiency is:



59. The work done by friction on a moving object is:



60. What form does wasted energy usually take in machines?



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