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

A) 0° B) 30° C) 60° D) 90°

Answer 1

C) 60°

Explanations:

W = F s cosθ

⇒ cosθ= W/F_s = 25/50=1/2

θ=60°