# Problem: A car is stopped in a distance exttip{D}{D} by a constant friction force that is independent of the cars speed.What is the stopping distance (in terms of exttip{D}{D}) if the cars initial speed is tripled?What is the stopping distance (in terms of exttip{D}{D}) if the speed is the same as it originally was but the friction force is tripled? (Solve using the work-energy theorem.)

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###### Problem Details

A car is stopped in a distance by a constant friction force that is independent of the cars speed.

What is the stopping distance (in terms of ) if the cars initial speed is tripled?

What is the stopping distance (in terms of ) if the speed is the same as it originally was but the friction force is tripled? (Solve using the work-energy theorem.)