# Car starting from rest

1. Nov 9, 2008

### fk378

1. The problem statement, all variables and given/known data
For a car starting at velocity=0 m/s, what would limit the acceleration in the first fraction of a second? (It's isn't the power of the engine) Use the fact that the force acceleration the car is the power over the velocity minus the air resistance force. The drag coefficient is 1.

2. Relevant equations
a=(P/v)-(.5Av^2)

where A=cross sectional area

3. The attempt at a solution
All I can see is that if v=0, then the first term for the acceleration approaches infinity. But in the question it says it doesn't have to do with the power.

Last edited: Nov 9, 2008
2. Nov 9, 2008

### asleight

The coefficient of static friction acts upon the wheels of the car in the first fraction of a second--it'll limit the acceleration.

3. Nov 9, 2008

### fk378

I forgot to add in the part that the drag coefficient=1