A 0.145-kg baseball pitched at 35.0 m/s is hit on a horizontal line drive straight back at the pitcher at 44.5 m/s .
Part A
If the contact time between bat and ball is 5.50×10−3 s , calculate the magnitude of the force (assumed to be constant) exerted on the ball by the bat.
Express your answer to three significant figures and include the appropriate units.