Question

A ball is dropped from a tower of height 19.6m . Find its

speed when it just touches the ground.​

Answer 1

Explanation:

Initial Velocity u=0

Fianl velocity v=?

Height, s=19.6m

By third equation of motion

v

2

=u

2

+2gs

v

2

=0+2×9.8×19.6

v

2

=384.16

⇒v=19.6m/s