The force involved in a collision is 1.0 × 102 newtons. The duration of the impact is 1.0 × 10-4 seconds. What is the value of the change in momentum?

Question

mathmate · Answer

hint:
Force = change in momentum / time

osprey · Answer

Guessing ... Looks like an application of Newton's second law, rejigged, shall we way. The effect of the duration of the force is called an IMPULSE, in this case of momentum. So, it seems likely that ANY force of 1.02N acting for a time of 10^-4s will have a change of momentum of 1.02x10^-4 Ns (=kgM/s^2 as in F=ma). Acting on something of "small" mass will give a HIGHER acceleration than on a "high" mass. (A shot putter can prob throw a baseball faster/further etc than they can a shot for the same sweaty effort ... ) Hope it's right, don't sue me please, not yet at least ? (after the US p e maybe ... :) http://perendis.webs.com