A trolley, R of mass 2 kg isconnected to a trolley S of mass 6 kg by a light rubber band.Trolley R and trolley S are held at rest on a horizontalfrictionless surface with the rubber band stretched out as shownabove.
R and S are then simultaneously released and the rubber band givesup 48J of energy as it contracts to its natural length. No energyis lost.
Calculate the speed acquired by trolley R when both R and S aresimultaneously released.
