A nonzero net force acts on a particle and does work. Which one ofthe following

Question

A nonzero net force acts on a particle and does work. Which one ofthe following statements is true?

The kinetic energy of the particle changes, but the velocity of theparticle does not change.

The kinetic energy, speed, and velocity of the particlechange.

The kinetic energy of the particle changes, but the speed of theparticle does not change.

The kinetic energy of the particle does not change, but the speedof the particle does change.

The kinetic energy and the speed of the particle change, but thevelocity of the particle does not change

Explanation / Answer

1)The force is zero, or the displacement is zero, or the angle is 180°. 2)The kinetic energy, speed, and velocity of the particle change. 3)W1 = - W2

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