SOLUTION: Does it take twice as far to stop a car that is going twice as fast? Explain.

Question 104015This question is from textbook
: Does it take twice as far to stop a car that is going twice as fast? Explain. This question is from textbook

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
it takes about 4 times as far because the kinetic energy (energy due to motion) of the car is proportional to the square of the speed

a car stops when the braking system has dissipated all of the kinetic energy (by converting it to heat)
the rate of conversion of the braking system is not related to the speed

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