Question

A stone dropped from a window reaches the ground in 0.5 seconds (1) calculate the speed just before it hits the ground.

Answer 1

Here t= 0.5 s

U= 0 since it is dropped

And a = g= 10 m/ s^2

V= u +at (1st eqn of motion)

0+ 0.5 (10)

5m/s