Physicshard · Past Paper
A force F = (5i + 3j) N is applied on a body which displaces it by s = (2i - 1j) m. The work done is:
A7 J
B13 J
C10 J
D11 J
✓ Correct Answer: A — 7 J
Work = F dot s = (5*2) + (3*-1) = 10 - 3 = 7 Joules.
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