a bowling ball with a mass of 10 kg is moving at a speed of 3 m/s. what is its kinetic energy?\na. 15 j\nb…
a bowling ball with a mass of 10 kg is moving at a speed of 3 m/s. what is its kinetic energy?\na. 15 j\nb. 30 j\nc. 90 j\nd. 45 j
Answer
Explanation:
Step1: Recall kinetic - energy formula
The formula for kinetic energy is $K = \frac{1}{2}mv^{2}$, where $m$ is the mass and $v$ is the velocity.
Step2: Substitute given values
Given $m = 10\ kg$ and $v = 3\ m/s$. Substitute into the formula: $K=\frac{1}{2}\times10\times3^{2}$.
Step3: Calculate the result
First, calculate $3^{2}=9$. Then, $\frac{1}{2}\times10\times9 = 5\times9=45\ J$.
Answer:
D. 45 J