posted by Nate .
I got all but this problem.
A 0.145-kg baseball is pitched at 42.0 m/s. The batter hits it horizontally to the pitcher at 58 m/s.
A. Find change in momentum? Is it =.145*58-(-.145*42)=1.45-kg m/s?
B. If bat and ball are in contact for 4.6 x 10-4 s, what is average force during contact?