Why does the momentum of an object affect the force of impact?

[muz_501]

A question about momentum ??

I have a question about momentum with respect to Newtons Second Law of Motion.When We hit a soccer ball our foot does not hurt but when we hit a rock our foot hurts badly.What is the reason of this ? I think it is related to reaction time

 

[Fightfish]

Yup, if you view a soccer ball being kicked in slow-motion, you will actually see it deform as it is elastic. The rock however, is much less elastic and hence the period of the interaction is significantly less.

 

[Hootenanny]

The mass of the two objects would also play a part as well. Compare the mass of a soccer ball to a "rock".