you serve a vollyball with the mass of 2.1 kg. the ball leaves you hand with a speed of 30 m/s. the ball has _____ energy

calculate it.

1 answer

To calculate the energy of the volleyball, we need to determine the type of energy associated with its motion. Since the volleyball is moving, it possesses kinetic energy.

The formula to calculate kinetic energy is:

Kinetic Energy (KE) = (1/2) * mass * velocity^2

In this case, the mass of the volleyball is 2.1 kg and the velocity is 30 m/s.

Plugging in these values into the formula, we get:

KE = (1/2) * 2.1 kg * (30 m/s)^2

Calculating this expression:
KE = (1/2) * 2.1 kg * 900 m^2/s^2
KE = 945 Joules

Hence, the volleyball has 945 Joules of kinetic energy.