Question

What is the kinetic energy of a body of mass 1 kg moving with a speed of 2 m/s?

Answer 1

We have to find the kinetic energy of the moving body. We have,
Mass of the body (m) = 1 kg
Speed of the moving body (v) = 2 m/s
So,
$K.E=\frac{1}{2}m{v}^2$
Where,
K.E - Kinetic Energy
m - Mass
v - Speed
Therefore,
$$\begin{gathered} K.E=\frac{1}{2}\left(1\right)(2{)}^2\mathrm{J} \\ =\boxed{2\mathrm{J}} \end{gathered}$$
So, the kinetic energy of the moving object is 2 J.