1. The problem statement, all variables and given/known data What is the x-component of the velocity of the stuck-together car and truck just after the collision? speed= -7.32352941176471 m/s You are correct. c) In your analysis in part (b), why can you neglect the effect of the force of the road on the car and truck? 2. Relevant equations Conservation of momentum and energy 3. The attempt at a solution I believe that During the collision, external forces are negligible so the momentum of the system is conserved. Am I on the right track here?