6. 10 Kevin decides to soup up his car by replacing the car\'s wheels with ones

Question

6. 10

Kevin decides to soup up his car by replacing the car's wheels with ones that have 1.2 times the diameter of the original wheels. Note that the speedometer in a car is calibrated based on the tire's diameter and on the distance the tire covers in each revolution.

vnew vold Kevin decides to soup up his car by replacing the car's wheels with ones that have 1.2 times the diameter of the original wheels. Note that the speedometer in a car is calibrated based on the tire's diameter and on the distance the tire covers in each revolution. Will the reading of the speedometer change? If you answered 'Yes' in part (a), determine the factor by which the reading of the speedometer changes. (Enter 'NA' if you did not answer 'Yes' in part (a).) Second part is wrong

Explanation / Answer

A) yes

B)ditance covered=circumference=pie*d

If d change to 1.2d

so circumference changed to =pie*1.2d=3.768

change in distance=3.768d-3.14d=0.6d

the factor by which the reading of the speedometer changes =0.60

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