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

anonymous · Answer

A. +1.3 meters/second B. +2.5 meters/second C. +5.3 meters/second D. +7.5 meters/second E. +9.8 meters/second

anonymous · Answer

Use the conservation of momentum.