A police officer is investigating the scene of an accident where two cars collided at an intersection. One car with a mass of 1135 kg moving west had collided with a 1300 kg car moving north. The two cars, stuck together, skid at an angle of 30° north of west for a distance of 25 m. The coefficient of kinetic friction between the tires and the road is 0.80.(adsbygoogle = window.adsbygoogle || []).push({});

What was the speed of the lighter car?

______ km/h

What was the speed of the heavier car?

______ km/h

I know this is a perfectly inelastic collistion and that Vf will be equal.

so x-dir m1vi1 = (m1 + m2) Vf cos 30

y-dir m2vi2 = (m1 + m2) Vf sin 30

so i can't solve too many unknowns.

How do i use the 25m and kinetic friction??

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# Homework Help: Momentum - Car Crash

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