physics
posted by flirtyme
A baseball bat hits a ball with an average force of 970N that acts for 0.0088s.
a) what impulse was given to the ball/
b)What was the change of momentum of the ball?
c)The ball was hit back in the same direction that it came from. If its speed before being hit was 32ms1, what was its speed afterwards? (Mass of baseball was 145g)
please help I would really appreciate you for the rest of my life. and is physics that important? its hard for nothing really

Damon
Force * time = impulse or change of momentum
a) so Impulse = 970*0.0088
b) As I said, impulse IS change of momentum
c) initial momentum = .145*32
(calling negative speed from pitcher to batter, positive from batter to center field)
The change of momentum is up in parts a and b
so
.145 v = .145*32 + answer to part b
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