Question

write an expression for the work done when a force is acting on an object in the direction of its displacement​

Answer 1

Answer:

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

Workdone=Force×displacement

or W=F×S

Explanation:

i hope its help to you

Answer 2

Answer:

Work is done when a force is applied, at least partially, in the direction of the displacement of the object. If that force is constant then the work done by the force is the dot product of the force

The force is always perpendicular to its velocity (dtdx=0). The object moves in such a way that the point of application of the force remains fixed (dx=0).