Consider the elastic head-on collision between a sledge hammer with 8000 g mass and a golf ball with a 4 g mass.

Consider the elastic head-on collision betweena sledge hammer with 8000 g mass and a golfball with a 4 g mass.The initial velocity of the sledge hammer is14 m/s , and the golf ball is initially at rest.Estimate the approximate final speed v2 of the golf ball.