Agirl delivering newspapers covers her route by traveling 3 block west, 4 blocks north, and then 6 blocks east. what is her total displacement? explain.

Why don't you see your reflection in water with waves or repples

The energy equivalent of the rest mass of an electron is

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?