Frame & Skin

4. The Required Power:

   P = {(Fd + Fr) (v) }
   Where: Fd = ½ (Cd) (A) (r) (v²)
   Fr = (Crr)(W)
   P = {((½) ( Cd) (A) (r) (v²) )+ ((Crr ) ( W) )) ( v)}
   P = (½ ) (Cd) (A ) (r )(v³) + ( Crr )(W )( v)
   By susituting the value:
   P = (½ )( 0.05) (0.8) (1.2) (v³) + (0.004) (2943) (v)
   P = 0.0225 v³ + 11.7 v
   By assuming the car speed is v = 80 km/h
   P = (0.0225) (80)³ + (11.7) (80)
   The required power to overcome the resistance forces is equal:
   P = 524.9 W