Question

A stone having a mass of 500 gm is falling from a height how much kinetic energy does it have at the moment when its velocity is 4 m/s

Answer 1

$\sf{\large{\underline{\underline{EXPLANATION:}}}}$

$\sf{Given}\begin{cases}\sf{m=500gm=\frac{1}{2}kg}\\ \sf{v=4ms^{1}}\\ \sf{K_{E}=??}\end{cases}$

Using Formula,,

$\sf{\boxed{K_{E}=\frac{1}{2}mv^{2}}}$

$\sf{\implies{K_{E}=\frac{1}{2}\times{\frac{1}{2}}(4)^{2}}}$

$\sf{\implies{K_{E}=\cancel\dfrac{16}{4}}}$

$\sf{\implies{K_{E}=4J}}$

$\rule{200}2$

Hope it helps ❣️❣️❣️