Question

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

Answer 1

Explanation:

here intial velocity

is 10mper second squre

then final velocity=?

so,2as=v2-u2

v2=2as+u2

v2=2×20×10+0

v2=400

v=20

niw time =?

t=v-u/t

20-0/10

=2sec

hope it may help u