Question

The driver of one car has a mass of 1200 kg and is traveling at 10 m/s westward when he collides with another car with a mass of 2000 kg that is traveling 15 m/s northward. The two cars stick together after colliding. Please show all work.

a) What is the total momentum before the collision and after the collision?

b) What are the speed and direction of the cars after the collision?

c) If coefficient of kinetic friction between the tires and road is 0.6, how far do they skid before coming to rest?

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Answer #1

Here we have from conservation of momentum Initial m om entum --1200x10i +2000 x15j =-1 2000i + 30000 Magnitude ^ P2000+30000

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