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A car has a kinetic energy of 4.32 * 10^5 J when traveling at a speed of 23 m/s. What is its mass?

Sorry for re-post and if anyone decides to help please step by step.

3 answers

(1/2) m v^2 = KE
so
m = 2 KE / v^2

Thanks a lot, I figured out the answer.

4.32 • 10^5 = 0.5(m)(23)^2
m=1633 kg or 1600 for significant figures

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