Question

select the correct answer. the mass of a moving object increases, but its speed stays the same. what happens to the kinetic energy of the object as a result? a. it decreases. b. it increases. c. it remains unchanged. d. it fluctuates up and down.

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 speed.

Step2: Analyze the effect of mass change

Given that $v$ is constant and $m$ increases. Since $K$ is directly proportional to $m$ (when $v$ is fixed), as $m$ increases, the value of $K=\frac{1}{2}mv^{2}$ increases.

Answer:

B. It increases.