Which example best illustrates the transfer of energy between two waves?

a)a buoy rises in the water as a boat speeds past. b)a basketball rebounds from the backboard during a missed shot. c)an egg that rolls off the counter falls and breaks on the floor. d)a car that rear ends another car causes damage to both vehicles.

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?