Question

problem 1: a 7.3 kg bowling ball rolls down the lane at a speed of 8 m/s. find the kinetic energy of the ball.

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 $m = 7.3\ kg$ and $v = 8\ m/s$. Substitute into the formula: $K=\frac{1}{2}\times7.3\times8^{2}$.

Step3: Calculate the result

First, calculate $8^{2}=64$. Then, $\frac{1}{2}\times7.3\times64 = 7.3\times32=233.6\ J$.

Answer:

$233.6\ J$