Question

3 what is the ke of a 22 kg mass moving at 5 m/s? a 110 joules b 550 joules c 55 joules d 275 joules

Explanation:

Step1: Recall the kinetic - energy formula

The formula for kinetic energy is $KE=\frac{1}{2}mv^{2}$, where $m$ is the mass and $v$ is the velocity.

Step2: Substitute the given values

Given $m = 22$ kg and $v = 5$ m/s. Substitute into the formula: $KE=\frac{1}{2}\times22\times5^{2}$.

Step3: Calculate the result

First, calculate $5^{2}=25$. Then, $\frac{1}{2}\times22\times25 = 11\times25=275$ J.

Answer:

D. 275 joules