Question

A ball thrown vertically upwards with a speed of 19.6m/s, from the top of the tower, returned to the earth in 6sec, find the height of the tower?

Answer 1

s = ut + 1/2(at2) = a=g

s = 19.6*6 + 1/2 (36*10)

s = 117.6 + 180

s = 297.6 m