CONCEPT:

• Work is said to be done by a force when the body is displaced actually through some distance in the direction of the applied force.
• Since the body is being displaced in the direction of F, therefore work done by the force in displacing the body through a distance s is given by

\(W = \vec F \cdot \vec s\)

Or, W = Fs cos θ

• Thus work done by a force is equal to the scalar or dot product of the force and the displacement of the body.

CALCULATION:

Given that:  

Force (F) = 50 , Displacement (s) = 5 m and  θ = 0 (because the force is in the direction of motion)

To find the amount of work done in this case, we must apply the following formula:

⇒ W = Fs cosθ

⇒ W = 50 × 5 = 250 J