Question

When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero? 

Answer 1

According to the law of conservation, energy can neither be created nor be destroyed but can transform from one form to another. 

Therefore, K.E. Lost by the ball = P.E. gained by the ball 

So, as velocity of ball becomes zero then K.E. would be zero and the P.E. would be maximum