A ball of mass $100 g$ is thrown with a speed of $15$ m/s. Calculate its kinetic energy.

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Solution

Given,
Mass of ball, $m = 100 g = 0.1 k g$
Speed of ball , $v = 15 m / s$

Kinetic energy of ball, $K = \frac{1}{2} m v^{2} = \frac{1}{2} \times 0.1 \times 15^{2} = 11.25 J$

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