Question

A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10m s-2 with what velocity will it strike the ground? After what time will it strike the ground?

Answer 1

20 m/s is the right answer

Answer 2

I will do in step by step shnayasheikh:-

Displacement=s=20m

Initial velocity=u=0

Acceleration=a=10m/s^2

Using

2as=v^2-u^2

v^2=2*10*20

v^2=20^2

final velocity =20m/s

Hope it helps u