To calculate the change in kinetic energy, you must know the force as a function of . The work done by the force causes the kinetic energy change. Choose the best answer to fill in the blank above:a. accelerationb. workc. positiond. potential energy

(c) position

Explanation:

From the work-energy theorem, the workdone by a force on a body causes a change in kinetic energy of the body.

But, remember that the work done (W) by a force (F) on a body is the product of the force and the distance d, moved by the body caused by the force. i.e

W = F x d

This distance is a measure of the position of the body at a given instance.

Therefore, the work done is given by the force as a function of distance (or position).

inverse v=i*r

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