What is the kinetic energy of a 2 kg object moving at 4 m/s?
A4 J
B8 J
C16 JCORRECT
D32 J
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Why the answer is C, and why the others tempt you.
KE = ½mv² = ½ × 2 × 4² = ½ × 2 × 16 = 16 J.
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