Question

You serve a volleyball with a mass of 7.23 kg. The ball leaves your hand at 29.9 m/s. Calculate the kinetic energy of the ball.

Answer 1

$108.08J$

Explanation:

$Given, \: \: \: m = 7.23 \: kg \: \: \: \: and \: \: \: v = 29.9 \: m {s}^{ - 1} \\ we \: \: know \: \: \boxed{kinetic \: \: energy = \frac{1}{2} m {v}^{2} } \\ Now, \: \: \: putting \: \: values \\ kinetic \: \: energy = \frac{1}{2} \times 7.23 \: kg \times 29.9 \: m {s}^{ - 1} \\ = \boxed{ 108.08J}$