A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial

Question

A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to $49 \mathrm{~m} / \mathrm{sec}$. How much time does the ball take to retum to his hands?

Professor PC Thomas Classes · Answer

Relative velocity concepts apply. Speed relative to lift depends on lift state.