Physicsmedium · Past Paper
A bullet of mass 10g is fired with a velocity of 400 m/s. What is its KE?
A800 J
B1600 J
C400 J
D2000 J
✓ Correct Answer: A — 800 J
Mass = 0.01 kg. KE = 1/2 * 0.01 * 400^2 = 1/2 * 0.01 * 160000 = 800 J.
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