The wind force on an intermediatesized car travelling at 70

The wind force on an intermediate-sized car travelling at 70 mph that has been properly designed drops to abeut 180 pounds, and rolling resistance to abeut 100 pounds. What is the required output of the car, in horsepower?

Solution

solution

V = 70 mph

= 31.2928 m/s

force = 180 - 100

= 80 pounds

= 355.858 N

required output = 355.858 X  31.2928

= 11135.79 W

= 14.93 horsepower