You serve a volleyball with a mass of 2.1 kg the ball leaves your hand with a speed of 30 m/s. The ball has ______ energy. Calculate it.

1 answer

To calculate the energy of the volleyball, we can use the equation:

Energy = 1/2 * mass * velocity^2

Given:
mass = 2.1 kg
velocity = 30 m/s

Plugging in these values into the equation, we get:

Energy = 1/2 * 2.1 kg * (30 m/s)^2
= 1/2 * 2.1 kg * 900 m^2/s^2
= 945 Joules

Therefore, the volleyball has 945 Joules of energy.