Question

A body of mass m is released from a point at a height h above thesurface ofte earth.Show that uts velocity (v) when itvstruck the rath surfaceis guven by

Answer 1

as the body is released = u = 0
v=?
a=g
s=h
${v}^{2} - {u}^{2} = 2as$
${v}^{2} - {0}^{2} = 2gh$
${v}^{2} = 2gh$
$v = \sqrt{2gh}$
this is the velocity with which the body will strike the earth on falling from height h