Answer
The magnitude of the average force on the ball from the wall is $~~170~N$
Work Step by Step
In part (b), we found that the magnitude of the impulse on the ball from the wall is $~~1.3~kg~m/s$
We can find the magnitude of the average force on the ball from the wall:
$F~t = J$
$F = \frac{J}{t}$
$F = \frac{1.3~kg~m/s}{7.6\times 10^{-3}~s}$
$F = 170~N$
The magnitude of the average force on the ball from the wall is $~~170~N$
