You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 35 m/s. The ball has __________________
2 answers:
Answer:
<em>The ball has 1286.25 J of energy</em>
Explanation:
<u>Kinetic Energy</u>
Is the type of energy of an object due to its state of motion. It's proportional to the square of the speed.
The equation for the kinetic energy is:
Where:
m = mass of the object
v = speed at which the object moves
The kinetic energy is often expressed in Joules (J).
The volleyball of a mass m=2.1 Kg is served at v=35 m/s, calculating its kinetic energy:
K = 1286.25 Joule
The ball has 1286.25 J of energy
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Therefore the correct answer is A.