The drag force, Fd, imposed by the surrounding air on a
vehicle moving with velocity V is given by
Fd 5 CdA12
rV2
where Cd is a constant called the drag coefficient, A is the
projected frontal area of the vehicle, and r is the air density.
Determine the power, in hp, required to overcome aerodynamic
drag for an automobile moving at (a) 25 miles per hour,
(b) 70 miles per hour. Assume Cd 5 0.28, A 5 25 ft2, and r 5
0.075 lb/ft2.

a)  23.551 hp

b)  516.89 hp

Explanation:

given:

required:

the power in hp

solution:

.............(1)

by substituting in the equation (1)

         =353.27 lbf

..........(2)

by substituting in the equation (2)

         = 2769.29 lbf

power is defined by

             P=F.V

     353.27*36.67

           =12954.411 lbf.ft/s

           =12954.411*.001818

           =23.551 hp

      2769.29*102.67

           = 284323 lbf.ft/s

           = 284323*.001818

           = 516.89 hp

answer:

truck

explanation:

its a truck maybe cause a rv is like a truck and yea but plz mark brainlest!