1. The problem statement, all variables and given/known data Two cars collide and go off in different directions. Car 1: Mass = 1010kg Distance before collision = 24m Distance after collision = 11.5m Angle from normal = 55.5° - Car 1 was stationery immediately before impact. Car 2: Mass = 1230kg Distance before collision = 22m Distance after collision = 18.6m Angle from normal = 35° μ = 0.55 (for both cars). 2. Relevant equations 1. Determine the speed of each vehicle immediately after impact as they slide to their final positions. 2. Determine the speed of the vehicles immediately before the collision (Law of Conservation of Momentum). 3. From the skid marks (distance before collision) find the speed of the vehicles before braking. 4. Calculate the distance and time from the point of impact before each driver recognised the imminent danger. 3. The attempt at a solution I'm thinking perhaps it means velocity rather than speed, that makes more sense to me. In that case, I would use equations of motion for 1 and 2, maybe 3 as well. However, initially I thought to use instantaneous velocity for question 1. Question 4, I have no clue, except that "before each driver recognised the imminent danger" is referring to the skid marks again. Any help will be greatly appreciated!