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Answer :
Final answer:
The width of the tire in the given size 195/65R15 is 195 millimeters. The angular displacement in revolutions can be calculated by dividing the distance traveled by the car by the circumference of the tires, knowing the tire's diameter and the car's speed and duration of the race.
Explanation:
The width of a tire with the dimensions 195/65R15 is 195 millimeters. The number 195 in the tire size represents the tire's sectional width in millimeters. Therefore, option A) 195 millimeters is the correct answer.
The angular displacement of the wheels of a Formula One race car can be calculated by first finding the distance traveled in 1.5 hours at a constant speed of 300 km/h. The distance traveled in 1.5 hours is 300 km/h * 1.5 h = 450 kilometers. To convert this distance to revolutions, we have to consider the diameter of the tire, which is 66 cm (or 0.66 meters). The circumference of the tire is found using the formula C = πd, where d is the diameter. Therefore, C = π * 0.66 m.
Now, we divide the total distance traveled (450,000 meters) by the circumference of the tire to find the number of revolutions. If we let N represent the number of revolutions, N = Distance Traveled / Circumference of Tire. Inserting the values, we get N = 450,000 / (π * 0.66). This calculation will give us the angular displacement in revolutions.
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