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?
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

Question

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?
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

souvik · Answer

in elastic collision linear momentum is conserved..

souvik · Answer

tan(theta)=Vy/Vx