A0.5 kg ball traveling at 1 m/s to the right hits a second ball of equal mass that is initially at rest. after the perfectly elastic collision, the second ball travels at 0.543 m/s at a 57.2 degree angle upward from the point of contact.

draw a before and after diagram of this collision

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.