Newton’s cradle is a toy that consists of several metal balls touching each other and su...

Newton’s cradle is a toy that consists of several metal balls touching each other and suspended on strings (Figure P6.82). When you pull one ball to the side and let it strike the next ball, only one ball swings out on the other side. When you use two balls to hit the others, two balls swing out. Can you account for this effect using your knowledge about elastic collisions?