In the figure puck 1 of mass my - 1.1 kg is sent sliding across a frictionless lab bench, to undergo a one-dimensional elastic collision with stationary puck 2. Puck 2 then slides oft the bnch and lands a distance d from the base of the bench. Puck 1 rebounds from the collision and slides off the opposite edge of the bench, landing a distance Sd from the base of the bench. What is the mass of puck 2? (Hint: Be careful with signs.) Number Units kg