Acar is traveling down the highway at speed v when the driver slams on the brakes and skids to a stop in a distance d. assuming the same frictional force, how far would the car slide if its speed was 2v?

It would slide a distance 4d

Explanation:

From the first scenario where the speed is v and the distance sliding is d we can calculate de value of the acceleration:

We know that

So, the acceleration is

Now, using the same formula and with the new value for we can solve for x from:

x=4d

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