Multiple choice

An automobile with projected area 2.6 m2 is running on a road with speed of 120 km per hour. The mass density and the kinematic viscosity of air are 1.2 kg/m3 and 1.5x10-5 m2 /s, respectively. The drag coefficient is 0.30.

The metric horse power required to overcome the drag force is

  1. 33.23

  2. 31.23

  3. 23.23

  4. 20.23

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation