A 4.0 tonne truck traveling east and a 1.0 tonne car traveling north collide and skid off the road together. The RCMP observes the skid marks going in the direction of 30 north of cast. The car driver claimed his speed was 30 km/h and that the trucker must have been going 70 km/h. The trucker claimed the opposite. Determine who was correct and explain why using principles of momentum. Show all calculations to verify your conclusion. (4 marks)