The area under a force-time graph represents--------

A.

change in kinetic energy

B.

change in momentum

C.

change in work done

D.

change in internal energy

Correct answer is B

It is a graph that represents the force that acts on a body in a certain amount of time.
Force on the object is represented by the y-axis and time taken by the object is represented by the y axis.
The area under the curve indicates the impulse, the change in momentum that the object undergoes.