A few years ago,when I used to be a delivery guy,I once drove a3000-kg truck into the rear of a 1,000-kg car that was parked in front of me (don't get me wrong,I did not do it on purpose).The truck and car locked together and moved at a speed of 9m/s after the collision.What was the speed at which I was driving before the collision?

Answer rating: 100% (QA)

To solve this problem we can use the principle of conservation of momentum The total momentum before ... View the full answer