Question

A ball is thrown vertically upward with a velocity of 20 m/s from a top of tower having a height of 50m.what time elapsed when it again passess the edge of the tower

Answer 1

Explanation:

given

u = 20m/s

h = 50m

g = 10m/s

v = 0m/s

v= u+hy

0= 20+ 10t

10t= 20

t=2sec