A car is traveling on a level road with speed v0 at the instant when the brakes lock, so that the tires slide rather than roll. (a) Use the work–energy theorem to calculate the minimum stopping distance of the car in terms of v0, g, and the coefficient of kinetic friction mk between the tires and the road. (b) By what factor would the minimum stopping distance change if (i) the coefficient of kinetic friction were doubled, or (ii) the initial speed were doubled, or (iii) both the coefficient of kinetic friction and the initial speed were doubled?
A car is traveling on a level road with speed v0 at the instant when the brakes lock, so that the tires slide rather than roll. (a) Use the work–energy theorem to calculate the minimum stopping distance of the car in terms of v0, g, and the coefficient of kinetic friction mk between the tires and the road. (b) By what factor would the minimum stopping distance change if (i) the coefficient of kinetic friction were doubled, or (ii) the initial speed were doubled, or (iii) both the coefficient of kinetic friction and the initial speed were doubled?
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Question
A car is traveling on a level road with speed
v0 at the instant when the brakes lock, so that the tires slide rather than
roll. (a) Use the work–energy theorem to calculate the minimum stopping
distance of the car in terms of v0, g, and the coefficient of kinetic
friction mk between the tires and the road. (b) By what factor would the
minimum stopping distance change if (i) the coefficient of kinetic friction
were doubled, or (ii) the initial speed were doubled, or (iii) both the
coefficient of kinetic friction and the initial speed were doubled?
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