(Answered) A car traveling at 600 kmh collides with a stationary truck

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A car traveling at 60.0 km/h collides with a stationary truck. The car has a mass of 840.0 kg and the truck has a mass of 1500 kg.

1) What is the momentum of the car before the collision? Answer in the units kgms-1

2) What is the kinetic energy of the car before the collision? Answer in Joules

3) After the collision the car and the truck stick together. What is the speed of the truck after the collision? Answer in ms-1

4) The car and truck leave skid marks along the road (after the crash the wheels of the two vehicles lock up and do not turn) as they come to rest. If these skid marks are 25.0 m long, what is the coefficient of kinetic friction between the wheels and the road?

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