- #1
kitenyos
- 12
- 0
Homework Statement
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? (1 mi = 1.609)
Answer in units of m.
Vi=29.9m/s
mu=.13
Vf=0m/s
Homework Equations
Ff=(Fn)(mu)
The Attempt at a Solution
There is no mass so i cannot calculate the normal force and i cannot calculate the Ff. At first I thought this problem was impossible because of lack of information but i did some research and all i could find is that "the mass cancels out". I do not understand this.