A hammer head of mass 600g produces a force of 360N when it strikes a head of a nail. Explain how it is possible for the hammer to drive the nail into a piece of wood, yet a weight of 360N resting on the head of the nail would not.

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?