describe the ball bearing down the hallway demonstration. why the ball bearing was able to make it down the entire length of the hallway?

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?