How to calculate Force

[chaveza27]

Need help with this question....

A batter from the other team hits a homerun which was traveling at 65 MPH until it hit you square in the forehead and lands in the glove you brought. If the ball weighs 5 ounces what is the ball's force a split second after it hit you

 

[Gene]

Hmmmmmm.
When it hits the force is
F=m(delta(v)/delta(t)
Delta(t) is about the time it takes to dent the skin (65mph/((1/8)inch?)
delta(v) is 65mph
m=w/g=5oz/32ft/s
Lots of units to change but you want it after your head has soaked up that force and it is dropping into the glove in your lap. It has stopped moving and the only force on it is gravity.
f=mg