Abowling ball of mass 9 kg moves in a straight
line at 3.28 m/s.
how fast must a ping-pong ball of mass
3.638 g move in a straight line so that the two
balls have the same momentum?
answer in units of m/s.

Why should seat belts not be mandatory quick plz

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?