Answer
The magnitude of the average force on the ball from the bat is $~~2930~N$
Work Step by Step
In part (a), we found that the magnitude of the impulse on the ball is $~~5.86~kg~m/s$
We can find the magnitude of the average force on the ball:
$F~t = J$
$F = \frac{J}{t}$
$F = \frac{5.86~kg~m/s}{2.00\times 10^{-3}~s}$
$F = 2930~N$
The magnitude of the average force on the ball from the bat is $~~2930~N$.