Answer
(a) The pitcher produced an average force of 153 N on the ball.
(b) please refer to the free-body diagram
Work Step by Step
(a) We can find the ball's acceleration.
$a = \frac{v^2-v_0^2}{2x} = \frac{(46~m/s)^2-0}{(2)(1.0~m)}$
$a = 1058~m/s^2$
We can use a force equation to find the force.
$F = ma = (0.145~kg)(1058~m/s^2)$
$F = 153~N$
The pitcher produced an average force of 153 N on the ball.
(b) please refer to the free-body diagram
