7) Canadians have devised a new game to augment their skill at curling! A series of elastic collisions occur between 6 'rocks' of mass m, 2m, 4m, 8m, 16m and 32m spaced out on a frictionless track. The game starts when the rock of mass m is thrown at the rock of mass 2m at 5 m/s. In turn the 2m rock strikes the one of 4m, etc for a total of 5 collisions. What is the final speed of the giant rock of mass 32m? (Answer: 0.658 m/s) 5 m/s m 2m 4m 8m 16m 32 m