A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joules, the angle which the force makes with the direction of motion of the body is

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0°

30°

60°

90°

answer is C.

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Detailed Solution

W=Fscosθ ⇒cosθ=WFs=2550=12 ⇒θ=60°

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