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Velocity not affecting heat produced by impact
A bolt of mass 0.3 kg falls from the ceiling of an elevator moving down with an uniform speed of 7 $\text{m s}^{–1}$. It hits the floor of the elevator (length of the elevator = 3 m) and does not ...
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Why is this height used for potential energy?
"In a hydro-electric scheme the catchment area is 57 km2 and the annual rainfall for the area is 1720 mm. The
reservoir for the scheme is 380 m above sea level, and the power station is 50 m above sea ...
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