Which of these is the best example of an elastic collision? a rubber ball is dropped from 1.2m and bounces back up to a height of 0.8m. a billiard ball strikes another of the same mass at rest and stops, and the second ball then moves with the same velocity as the first ball. a cart rams a similar cart and latches onto it with a loud clank. a cart rams another with a compressed spring, which is released, pushing them apart.

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

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?

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.