Which of the following bodies has the largest kinetic energy?

Name: Which of the following bodies has the largest kinetic energy?
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Question

Quizplus · Accepted Answer

Kinetic energy is given by the formula $KE = \frac{1}{2}mv^2$. For each option: A) $KE = \frac{1}{2} \cdot 3M \cdot V^2 = \frac{3}{2}MV^2$, B) $KE = \frac{1}{2} \cdot 3M \cdot (2V)^2 = 6MV^2$, C) $KE = \frac{1}{2} \cdot 2M \cdot (3V)^2 = 9MV^2$, D) $KE = \frac{1}{2} \cdot M \cdot (4V)^2 = 8MV^2$. Thus, the body with mass $2M$ and speed $3V$ has the largest kinetic energy.

Which of the Following Bodies Has the Largest Kinetic Energy