3/265 The elements of a device designed to measure the coefficient of restitution of bat-baseball collisions are shown. The 1-lb "bat" A is a short length of wood or aluminum

which is projected to the right|with a speed vA the horizontal slot. Just before and after the moment of impact, body A is free to move horizon-tally. The baseball B weighs 5.125 oz and has an initial speed vB60 ft/sec within the confines of%3D125 ft/sec. If the coefficient of0.5, determine the final speed of restitution is e =the baseball and the angle B which its final velocity makes with the horizontal.