Physicsmedium · Past Paper
A body of mass 10 kg is moving on a horizontal frictionless surface with velocity 5 m/s. Work done by gravity is:
A50 J
B250 J
C0 J
D500 J
✓ Correct Answer: C — 0 J
Gravity acts vertically downward while displacement is horizontal (90 degrees), so work done by gravity is zero.
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