physics

posted by .

A car is traveling at 45.0 mi/h on a horizontal highway.
(a) If the coefficient of static friction between road and tires on a rainy day is 0.100, what is the minimum distance in which the car will stop?
____ m

(b) What is the stopping distance when the surface is dry and µs = 0.602?
_____ m

  • physics -

    Vf^2=Vi^2+2ad

    but a= force/mass= mu*mg/m= mu*g
    solve for distance d.

  • physics -

    45 mi/h = 20.1168 m/s

    ma= .100n
    a = .100(g)

    solving for time
    v=vo + at
    20.1168m/s=0+.98(t)
    t=20.527s

    solving for distance
    d=do+vot+at^2/2
    d= 0+0+.98(20.527s)^2/2
    d= 206.469m

  • physics -

    S=u^2/2µs(g)
    S=(20.1168m/s)^2/2*.602*9.8
    S=34.298m

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A car is traveling at 51.0 mi/h on a horizontal highway If the coefficient of static friction between road and tires on a rainy day is 0.096, what is the minimum distance in which the car will stop What is the stopping distance when …
  2. Physics

    A car is traveling at 54.2 km/h on a flat highway. The acceleration of gravity is 9.81 m/s^2. PART 1: If the coefficient of kinetic friction between the road and the tires on a rainy day is 0.131, what is the minimum distance needed …
  3. physics

    A car is travelling at 42.4 km/h on a flat highway. The acceleration of gravity is 9.81 m/s^2. If the coefficient of friction between the road and the tires on a rainy day is 0.125 what is the minimum distance for the car to stop?
  4. Physics

    A car travleing at 30.6 mi/h on a horizontal highway. The acceleration of gravity is 9.8 m/s^2. If the coefficient of friction between the road and tires on a rainy day is .083, what is the minimum distance the car will stop?
  5. Physics

    A car is traveling at 42.0 km/h on a flat highway. (a) If the coefficient of friction between road and tires on a rainy day is 0.100, what is the minimum distance in which the car will stop?
  6. physics

    A car is traveling at 60.6 mph on a horizontal highway. The acceleration of gravity is 9.8 m/s2. If the coefficient of friction between road and tires on a rainy day is 0.056, what is the minimum distance in which the car will stop?
  7. Physics

    A car is traveling at 66.9 mi/h on a horizontal highway. The acceleration of gravity is 9.8 m/s2. If the coefficient of friction between road and tires on a rainy day is 0.13, what is the minimum distance in which the car will stop?
  8. Physics

    A car is traveling at 44.4 km/hr on flat highway. If the coefficient of friction between road and tires on a rainy day is 0.114, what is the minimum distance in which the car will stop?
  9. physics

    A car is traveling at 58.2 km/h on a flat highway. The acceleration of gravity is 9.8 m/s2 . If the coefficient of friction between the road and the tires on a rainy day is 0.155, what is the minimum distance in which the …
  10. physics

    A car is traveling at 60.6 mph on a horizontal highway. The acceleration of gravity is 9.8 m/s2. If the coefficient of friction between road and tires on a rainy day is 0.056, what is the minimum distance in which the car will stop?

More Similar Questions