The total energy change of a body which covers a vertical height is constituted completely by the potential energy change only when ______
A. It moves slowly
B. It moves quickly
C. It moves for some time, then rests, then moves again
D. It moves with a decreasing velocity
Answer:A
The total energy change of a body which covers a vertical height is constituted completely by the potential energy change only when ______
A. It moves slowly B. It moves quickly C. It moves for some time, then rests, then moves again D. It moves with a decreasing velocity