A 0.75 kg model car is moving west at a speed of 9.0 m/s when it collides head-on with a 2.00 kg model truck that is traveling east at a speed of 10.0 m/s. After the collision, the 0.75 kg model car is now moving east at 11 m/s. What is the speed and direction of the model truck after the collision? a. 9.3 m/s east c. 2.5 m/s east b. 9.3 m/s west d. 2.5 m/s west
So truck will move with final velocity of 2.5m/s in East direction. Hope you are able to see.. It's a bit messy. Option C is correct.