Three cars (car F, car G, car H) are moving with the same speed and slam on their breaks. The most massive car is car F, and the least massive car is car H. If the tires of all three cars have identical coefficients of kinetic friction with the road surface, which car travels the longest distance to skid to a stop?

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Asked Sep 18, 2019
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Three cars (car F, car G, car H) are moving with the same speed and slam on their breaks. The most massive car is car F, and the least massive car is car H. If the tires of all three cars have identical coefficients of kinetic friction with the road surface, which car travels the longest distance to skid to a stop?

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Expert Answer

Step 1

Write the expression for friction force acting on the car.

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f is the frictional force isthe coefficient of kinetic friction f N 1 Nis the normal force Mis the mass of the car 2] N Mg g is the accleration due to gravity use 2]in [1] f -HMg [4] Acceleration of the car ,a M use[3]in [4] a -g

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Step 2

Write the kinemati...

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-7= 2ad Sincethe final velocity of the car is zero -7= 2ad use 5lin [6] -v7 =-244gd [6] [7] d 2Hg

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