A7.29 kg bowling ball moves at 1.73 m/s. how fast must a 2.28 g ping-pong ball move so that the two balls have the same kinetic energy? answer in units of m/s.

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.