The drag force on a car increases with speed. At 
, the total drag force is 
. The mass of the car is 
and the driving force is constant at 
. Which statement about the acceleration of the car at is correct?
The acceleration is 
but will decrease as time passes.
The acceleration is but will increase as time passes.
The acceleration is 
but will decrease as time passes.
The acceleration is but will increase as time passes.
