posted by Joe .
A 2000 kg truck is at rest at a stop sign. A 1100kg car collides head-on with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?
I have never figured our why some teachers use the term "completeley" inelastic. Is that akin to being completely pregnant?
anyway, the collision is inelastic.
Momentum convervation: assume the car/truck are stuck.
2000*O+1100*15=(2200+11OO)V solve for V