What is the minimum distance in which the car will stop?

In summary, the question asks for the minimum distance a car traveling at 34.5 mi/h on a horizontal highway with a coefficient of static friction of 0.064 and acceleration of gravity of 9.8 m/s^2 will stop on a rainy day. The second part asks for the stopping distance on a dry surface with a coefficient of friction of 0.675. The provided URL may help with understanding static and kinetic friction.
  • #1
debbie18
6
0
Can someone tell me how to do this question:
1. a) A car is traveling at 34.5 mi/h on a horizontal highway. The acceleration of gravity is 9.8 m/s^2. If the coefficient of static friction between road and tires on a rainy day is 0.064, what is the minimum distance in which the car will stop?
b) What is the stopping distance when the surface is dry and the coefficient of friction is 0.675.
Thanks.
 
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  • #2
debbie18 said:
Can someone tell me how to do this question:
1. a) A car is traveling at 34.5 mi/h on a horizontal highway. The acceleration of gravity is 9.8 m/s^2. If the coefficient of static friction between road and tires on a rainy day is 0.064, what is the minimum distance in which the car will stop?
b) What is the stopping distance when the surface is dry and the coefficient of friction is 0.675.
Thanks.

What have you done so far?

The following URL might help you with the definition of static and kinetic friction, if that happens to be your problem (it's hard to say, because you haven't attempted to explain how you tried to solve the problem).

http://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html
 

1. What factors affect the minimum stopping distance of a car?

The main factors that affect the minimum stopping distance of a car are the speed of the car, the condition of the road, the condition of the tires, and the reaction time of the driver.

2. How does speed impact the minimum stopping distance of a car?

The higher the speed of the car, the longer the minimum stopping distance will be. This is because the car will have more kinetic energy, which needs to be dissipated in order for the car to come to a complete stop.

3. What role does road condition play in the minimum stopping distance of a car?

The condition of the road, such as its surface and slope, can greatly impact the minimum stopping distance of a car. A wet or icy road will reduce the friction between the tires and the road, making it harder for the car to stop.

4. How do tires affect the minimum stopping distance of a car?

The condition of the tires, including their tread depth and inflation, can significantly impact the minimum stopping distance of a car. Worn or underinflated tires will have less grip on the road, increasing the stopping distance.

5. How does reaction time of the driver affect the minimum stopping distance of a car?

The reaction time of the driver, or the time it takes for them to perceive a potential hazard and react, can greatly impact the minimum stopping distance of a car. The longer the reaction time, the longer it will take for the driver to apply the brakes, resulting in a longer stopping distance.

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