Hi,

there are (mostly) 3 equations which you need for these kinds of problems:

m = mass

mt = time

d = distance

v = speed

a = acceleration

F = force

The formulae:

the ball was braked(?) (negatively accelerated ). You know the speed and the mass, you have to calculate all missing values:

Plug in this term into the formula of speed: You know v and d, calculate t:

Now calculate a:

and now calculate the force:

(That's a pretty hard hit for a ball travelling at so better check my calculations)