Question

The ball is dropped from top of a tower of 100 m height. simultaneously another ball was thrown upward from the bottom of the tower with speed of 50 m/s. they will cross each other after

Answer 1

Plzz see in the pic I hope it is not wrong and helps you frnd

Answer 2

Hi mate

Question

The ball is dropped from top of a tower of 100 m height. simultaneously another ball was thrown upward from the bottom of the tower with speed of 50 m/s. they will cross each other after

Solution

Suppose they will cross each other after time t then the sum of the value of their displacement should be equal to height of tower.

Now displacement of first ball in time t is gt²/2

and for second ball it will be ut − gt²/2

adding them we will get ut which should be equal to 100meter

so t = 2second.

Therefore 2 seconds is your answer

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