posted by Ben .
A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 50.0 m/s. The bat does Wnc = 65.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above the point of impact.
If you assume all this is elastic..
KEi from initial speed; work done given, change PE=mg(25)
figure KE final. The, calculate Vf