INFORMATION:
Kathy and Bill collided at an intersection. The police learned the mass of the truck is 3200 kg and the mass of the car is 2800 kg. Based on the length of the skid marks at the scene and the mass of the vehicles, police estimate that the combined mass was moving at 7.0 m/s just after the impact. From this point, that two vehicles slid and came to rest at the corner of the intersection.
Using the principle of conservation of momentum, the police determined that Bill's truck was travelling at 2.3 m/s before the collision, and Kathy's car was travelling at 15 m/s before the collision.
The two momentum vectors before the collision are represented by the horizontal and vertical lines in the diagram below. The momentum after the collision is the slanted line. Adding the two momentum vectors before the collision equals the momentum after the collision, according to the law of conservation of momentum.
3) Using the vector diagram above and your calculated value for the momentum of the combined vehicles, verify the police's calculations and determine the momentum and velocity of Bill's truck just before the collision.
4)Using the vector diagram above and your calculated value for the momentum of the combined vehicles, verify the police's calculations and determine the momentum and velocity of Cathy's car just before the collision.
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