Question

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

Answer 1

Answer:

The ball has kinetic energy.

Kinetic energy is 945 J

Explanation:

Kinetic energy = 0.5 x Mass x Velocity²

Here the ball has mass and velocity.

So the ball has kinetic energy.

Kinetic energy = 0.5 x Mass x Velocity²

Mass = 2.1 kg

Velocity = 30 m/s

Kinetic energy = 0.5 x 2.1 x 30²

Kinetic energy is 945 J

Answer 2

A. The ball has kinetic energy.

B. The kinetic energy of the volleyball is 945 J

A. Determination of the energy of the volleyball. Kinetic energy can be defined as the energy possed by an object in motion.

From the question given above, we can see that the volleyball has a speed of 30 m/s. Hence, the volleyball is in motion. Therefore, the volleyball has kinetic energy.

B. Determination of the kinetic energy.

From the question given above, the following data were obtained:

• Mass (m) = 2.1 Kg
• Velocity (v) = 30 m/s
• Kinetic energy (KE) =?

KE = ½mv²

KE = ½ × 2.1 × 30²

KE = 945 J

Therefore, the kinetic energy of volleyball is 945 J

Learn more about kinetic energy: https://brainly.com/question/10703928