Posted by Joe on .
A 2000 kg truck is at rest at a stop sign. A 1100kg car collides headon 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?

physics 
Elena,
m1•0+m2•v2=(m1+m2)v
v=m2•v2/(m1+m2)