I have 2 controversy question 1. A girl standing on a stationary lift throws a ball upwards with initial speed 50 m/s the time taken by the ball to return to her hands is?
2 .a player throws a ball upwards with an initial speed 30m/s how long does the ball take to return to the players hand?
Why can't we I use 1st law of motion for the first case(v=u+at)
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