The standard official baseball and softball can vary in mass
Baseball range: 0.141 kg to 0.149 kg
Softball range: 0.177 kg to 0.198 kg

The fastest recorded baseball pitch was 105.1 mi/h.
Let's say the ball was pushed by the pitcher's hand over a reasonable distance of 1.6 m before being released. Assume the simplest case of constant acceleration for the ball. The ball starts from rest. Assume a reasonable baseball mass of 0.146 kg a.

Determine the constant force (in N) the pitcher would have exerted on this ball