What is the kinetic energy of a 2.0 kg object moving at 5.0 m/s?
Answer and explanation
Correct answer: D. 25 J, from 0.5(2.0)(5.0)^2
- Step 1: KE = 0.5 m v^2. Step 2. 0.5(2.0)(25) = 25 J. Answer: 25 J. Why not the others: the others miss the factor 0.5 or the square.
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