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Final answer:
In this context, the magnitude of force required to maintain constant speed and the fuel consumption for a specific journey are explored.
Explanation:
(a) What is the magnitude of the force exerted to keep the car moving at constant speed?
(b) If the required force is directly proportional to speed, how many gallons will be used to drive 108 km at a speed of 28.0 m/s?
For part (a), the force can be calculated using Newton's first law; the force required to keep an object moving at constant speed is equal to the force of friction or air resistance. For part (b), the relationship between force, speed, and distance traveled can be utilized to determine the amount of fuel needed for the journey.
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