Calculate the kinetic energy of a body of mass 10 kg moving with a velocity $2 m s^{- 1}$ .

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Solution

The kinetic energy of a body is
$K E = \frac{1}{2} m v^{2}$

$= \frac{1}{2} (10) (2)^{2} = 20 J$

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Calculate the kinetic energy of a body of mass 10 kg moving with a velocity 2ms−1.

The kinetic energy of a body is KE=12mv2=12(10)(2)2=20J

Calculate the kinetic energy of a body of mass 10 kg moving with a velocity $2 m s^{- 1}$ .

The kinetic energy of a body is
$K E = \frac{1}{2} m v^{2}$

$= \frac{1}{2} (10) (2)^{2} = 20 J$