Question

question 4 of 25
a 50 kg aardvark runs with a speed of 6 m/s. what is the kinetic energy of the aardvark?
a. 600 j
b. 300 j
c. 150 j
d. 900 j

Explanation:

Step1: Recall kinetic - energy formula

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

Step2: Substitute given values

Given $m = 50\ kg$ and $v=6\ m/s$. Substitute into the formula: $K.E.=\frac{1}{2}\times50\times6^{2}$.

Step3: Calculate the result

First, calculate $6^{2}=36$. Then, $\frac{1}{2}\times50\times36 = 25\times36=900\ J$.

Answer:

D. 900 J