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Solve the all parts of following problem given below:

Problem: 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). The density of air is 1.2 kg/m3.

Part A: What are the drag forces at 80 km/h and 109 km/h for a Toyota Camry? (Drag area = 0.70 m2 and drag coefficient = 0.28).

at 80 km/h = _____ N

at 109 km/h = _____ N

Part B: What are the drag forces at 80 km/h and at 109 km/h for a Hummer H2? (Drag area = 2.44 m2 and drag coefficient = 0.57).

at 80 km/h = ______ N

at 109 km/h = ______ N

I need help to determine the drag forces at 80 km/h and at 109 km/h for a Hummer.

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