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What will happen to the kinetic energy of a body if its velocity is halved ?
As known Kinetic Energy $K=\frac{1}{2}mv^2$
Where $m\rightarrow$ mass of a body
$v\rightarrow$ velocity of the body
If half the velocity then the velocity becomes $\frac{v}{2}$
Then kinetic energy $K=\frac{1}{2}m( \frac{v}{2})^2$
$=\frac{1}{4}\times\frac{1}{2}mv^2$
Thus, kinetic energy will remain one fourth when the velocity is halved.
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