A supervisor visited an 8th grade class...he wrote the word electricity on the board and asked a student to define it.
Student:electrikity is the flow of electrons in a circuit.
Supervisor:it's not''electrikity'' it's electricity
Student:that's what I'm saying sir,my dad...
Check out the following links:
http://id.mind.net/~zona/mstm/physics/mechanics/momentum/introductoryProblems/multiMomentum4.html
http://en.wikibooks.org/wiki/FHSST_Physics_Momentum:Impulse
http://en.wikibooks.org/w/index.php?title=Talk:FHSST_Physics_Momentum:Impulse&redirect=no
Hope it...