A car is traveling at 50.0 mi/h on a horizontal highway. (a) if the corfficient

Question

A car is traveling at 50.0 mi/h on a horizontal highway. (a) if the corfficient of static friction between road and tires on a rainy day is 0.097, what is the minimum distance in which the car will stop? (b) what is the stopping distance when the surface is dry and ps= .599?(it isnt ps but there isnt a button for that u lookin thing) A car is traveling at 50.0 mi/h on a horizontal highway. (a) if the corfficient of static friction between road and tires on a rainy day is 0.097, what is the minimum distance in which the car will stop? (b) what is the stopping distance when the surface is dry and ps= .599?(it isnt ps but there isnt a button for that u lookin thing) (a) if the corfficient of static friction between road and tires on a rainy day is 0.097, what is the minimum distance in which the car will stop? (b) what is the stopping distance when the surface is dry and ps= .599?(it isnt ps but there isnt a button for that u lookin thing)

Explanation / Answer

Apply Newton second law along vertical direction

N- W = 0

N= W

horizontalyy

- FR = ma

-uk N = ma

-uk mg = ma

a = - uk g

Apply kinematic equatin

v^2 - u^2 = 2as

s= u^2/ 2ukg

= ( 22.35)^2/2(0.097)(9.8)

=262.78 m

(b)

s= u^2/ 2ukg

= ( 22.35)^2/2(0.599)(9.8)

=42.54 m

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