Question

To maintain a constant speed, the force provided by a car’s engine must equal the drag force plus the force of friction of the road (the rolling resistance). Assume that the drag coefficient for a Toyota Camry is 0.28, while for a Hummer it is 0.64. The density of air at this temperature is 1.21 kg/m³.

s₁ = 62 km/h
s₂ = 110 km/h

A) What is the drag force at 62 km/h for a Toyota Camry? (Drag area is 0.70 m²)

B) What is the drag force at 110 km/h for a Toyota Camry? (Drag area is 0.70 m²)

C) What is the drag force at 62 km/h for a Hummer H2? (Drag area is 2.44 m²)

D) What is the drag force at 110 km/h for a Hummer H2? (Drag area is 2.44 m²)

Answer 1