(1/2)(1200)(900) = 540,000 joules
m g h = 1200 * 9.81 * h = 540,000
h = 45.9 meters
A) What is the kinetic energy of a 1200kg car traveling at a speed of 30 m/s (≈65mph)?
B) From what height would the car have to be dropped to have this same amount of kinetic energy just before impact?
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