Speed of a ball after collision

Naldo6

1. The problem statement, all variables and given/known data[/b]



A ball and bat, approaching one another each with the same speed of 1.9 m/s, collide. Find the speed of the ball after the collision. (Assume the mass of the bat is much much larger than the mass of the ball and that this is an elastic collision with no rotational motion).

2. Find the factor by which the KE of the ball increases due to the collision.

Could anyone help me?...

tiny-tim

Hi Naldo6!

Hint: call the mass of the ball m, and the mass of the bat M, solve in the usual way, and then let M/m tend to infinity.