Physicshard · Past Paper
A bullet of mass 10 g is fired with a velocity of 100 m/s. Its kinetic energy is:
A500 J
B50 J
C100 J
D5 J
✓ Correct Answer: B — 50 J
m = 0.01 kg. KE = 1/2 * 0.01 * 100^2 = 0.005 * 10000 = 50 Joules.
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