Posted by alex on .
A 3000kg car bumps into a stationary, 5000kg truck. The
velocity of the car before the collision was +4 m/s and
1 m/s after the collision. What is the velocity of the truck
after the collision?

physical science 
Elena,
v₁= {2m₂v₂₀ +(m₁m₂)v₁₀}/(m₁+m₂)
v₂={ 2m₁v₁₀  (m₂m₁)v₂₀}/(m₁+m₂)