In: Physics
A 2750 lb car has a frontal cross-sectional area A of 22.4 ft2, a drag coefficient Cd of 0.28, and a drive (or tractive) force of 280 lbs. Assume an air density of 2.3x10-3 slug/ft3.
A. Determine the acceleration of the car when it is driving at 31 mph on a level road.
B. Determine the acceleration of the car when it is driving at 31 mph on a level road into a 7 mph head wind.
C. Determine the acceleration of the car when it is driving at 31 mph up a 2.1 degree hill (no head or tail wind).