Question

A ball is thrown vertically upwards with a velocity of 20ms −1 from the top of a multi storey building.The height of the point where the ball is thrown 25 m from the ground. Trace the trajectory of this ball​

Answer 1

Taking vertical upward motion of the ball upto highest point.

Here, u=20ms−1

v=0 ( At highest point velocity is zero)

a=−g=−10ms−2

As v2=u2+2aS

0=(20)2+2(−10)(S)  or S=20×2020

=20m