Question

A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. ​

Answer 1

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Let us take it that the force acts on the object through the displacement.

When a force F acts on an object to move it in its direction through a distance S, the work is done

The work on the body is done by force

Work done = Force × Displacement

W = F × S

Where,

F = 7 N S = 8 m

So, work done,

W = 7 × 8

W = 56 Nm

W = 56 J

Answer 2

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When a force F displaces a body through a distance S within the direction of the applied force, then the work done W on the body is given by the expression:

W = F × S