Question

A ball is dropped from rest. The acceleration due to gravity is 10m s -2 and the time it takes for the ball to reach the ground is 5 seconds. What was the velocity of the ball just before it hit the ground?​

Answer 1

ans - 50m/s

Step-by-step explanation:

if it hit the ground in 5 seconds then .... height is

h=ut+1/2t^2

here u is 0 then h= 125m

now

v^2=2ah

v^2=2x10x125

then v=50m/s