5. You serve a volleyball with a mass of $2.1 \mathrm{~kg}$. The ball leaves your hand with a speed of $30.0 \mathrm{~m} / \mathrm{s}$. Calculate the kinetic energy.
\[
K E
\]

Answer

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Answer

$\boxed{\text{Final Answer: The kinetic energy of the volleyball is 945.0 J}}$

Steps

Step 1 ：Given mass (m) = 2.1 kg and velocity (v) = 30.0 m/s

Step 2 ：Calculate the kinetic energy (KE) using the formula: KE = 0.5 * m * v^2

Step 3 ：Plug in the values: KE = 0.5 * 2.1 * 30.0^2

Step 4 ：Calculate the result: KE = 945.0 J

Step 5 ：$\boxed{\text{Final Answer: The kinetic energy of the volleyball is 945.0 J}}$