JEE Main Physics question
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
Answer: (C)
Solution
W = Fs cosθ ⟹ cosθ = 25/(5 × 10) = 1/2 ⟹ θ = 60°.