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Police find skid marks 180 meters long on a highway where a car made an emergency stop Assuming that the deceleration was a10ms2 how fast was the car traveling before the brakes were applied?
Wiki User
∙ 15y ago
You can use the formula "Vf2=Vi2 + 2ad" because you know the final velocity is zero, and the distance is 180m.
Vf2=Vi2 + 2ad
0=Vi2 + 2(-10)(180)
0=Vi2 -3600
3600=Vi2
Vi=60m/s
Wiki User
∙ 15y ago
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