Recent content by Lucyc2008

Homework Statement A 3.20kg rubber ball drops from a height of 4.80m to the ground a bounces back to a height of 2.70m a) how much potential energy does the ball lose on the trip down? b) how much energy does the ball regain on the trip back up? c) what is the net loss of potential energy...

Homework Statement A physics student . stands on a bathroom scale, calibrated in Newtons, while riding in an elevator. How will the reading on the bathroom scale compare to the normal reading for the following sequence of the elevator's motion? elevator starts to descend; elevator descends at...