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1998MT2s

# 1998MT2s - Physics 125 Test II This is a closed book exam...

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1. (20 points). Kinetic and Potential Energy a). (5 points) A brick #1, m = 2.0 kg, is dropped to the ground from a height of 10 m. Next, a second brick, #2 with twice the mass, is dropped to the ground from 20 m. What is the ratio of the kinetic energy of the second brick to the first brick, K 2 /K 1 = ? K 1 = mgH K 2 = (2m)g(2H) K 2 /K 1 = 4 b). (5 points) A bottle dropped from a balcony of height H = 10 m strikes the pavement with a speed, s. To double the speed of impact
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1998MT2s - Physics 125 Test II This is a closed book exam...

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