Friction and Acceleration in Automobiles

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The discussion focuses on calculating the maximum theoretical speed of an automobile starting from rest over a distance of 400 meters, considering different weight distributions for front-wheel and rear-wheel drive. The coefficient of static friction is given as 0.80, which is crucial for determining the frictional force that must be overcome to initiate movement. Static friction is emphasized because it applies when the vehicle is stationary, while kinetic friction is relevant once the vehicle is in motion. The conversation also touches on the necessity of understanding net force to initiate movement, highlighting the importance of friction in this context. Overall, the analysis centers on how friction affects acceleration and maximum speed in automobiles.
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Homework Statement



Determine the maximum theoretical speed that an automobile starting from rest can reach after traveling 400 m. assume that the coefficient of static friction is .80 between the tires and the pavement and that (a) the automobile has front wheel drive and the front wheels support 62% of the automobile's weight, (b) the automobile has rear-wheel drive and the rear wheels support 43% of the automobile's weight.

Homework Equations



F(friction) = (coeff. friction)(normal force)

The Attempt at a Solution



My question is that why they give me static friction instead of kinetic friction.
((Does that mean that kinetic friction only applies when the acceleration is not constant and/or zero?))-->NVM this
 
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Because your truck started from rest, you need to know how much net force it needs in order for it start moving which must include overcoming friction.
 

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