4.) Area under the force/displacement curve is..... 3.) If we have some external

Question

4.) Area under the force/displacement curve is.....

3.) If we have some external force like spring force acting on the system earth and car, what would be the work done by the external force?(the height of the car changes)

2.) In the conservation of mechanical energy, the work done by non_conservative forces like fraction force is.....

1.) Based on the conservation of mechanical energy, what energies are constant?

d kinetic and potential energy

Explanation / Answer

4- area under the force / displacement curve is equal to net work done. Net work done is equal to the net force multiplied by the displacement in the whole of the motion.

Net work done s equal to the change in mechanical energy.

Hence all statements are correct. Option (d) is correct.

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