Question

A ball is thrown vertically upwards with a velocity of 20 metre per second from the top of a multi storey building the height of the point where the ball is thrown is 25 metre from the ground how long will it be before the ball hits the ground at 1 G equals to 10 metre per second square

Answer 1

Answer:

(a)

H =u2(2g)

H=20 2×10

H=20m