1. The problem statement, all variables and given/known data 2000 kg car traveling west at 75 km/h and a motorcycle traveling south at 108 km/h weighing 1000kg. assuming the collision is completely inelastic, what is the velocity of the vehicles after the collision. 2. Relevant equations I know that the Pi, system = Pf, system. 3. The attempt at a solution I am just confused of where to start. Any pointers into the correct direction would be greatly appreciated.