Use the scenario below for the next question.
You were traveling north at speed vc in your car of mass mc = 2000 kg through an intersection when you were struck by a light truck of mass mt = 4000 kg traveling West. After the collision the two vehicles are stuck together and travel a distance of 20 m in the direction 30 N of W.
-If your speed is 72 km/h, what is the work done by friction in bringing the two vehicles to rest after the collision?
A) - 4.0 105 J
B) - 5.3 105 J
C) - 8.0 105 J
D) -1.3 106 J
E) - 1.6 106 J
Correct Answer:
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