A car with a mass of 1.1 × 103 kilograms hits a stationary truck with a mass of 2.3 × 103 kilograms from the rear end. The initial velocity of the car is +22.0 meters/second. After the collision the velocity of the car is -11.0 meters/second. What is the velocity of the truck after this elastic collision?

Question

loser66 · Answer

you have m1v1 +m2v2 m1'v1'+m2v2'
where v1 is initial velocity of the car = 22.0m/s, and v1' is final velocity of the car = -11.0m/s
 v2 is initial velocity of truck =0

Plug them into the equation above to get v2'