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a car has wheels with a 10 inch radius. if each wheel's rate of turn is 8 revolutions per second, how fast (linear speed) is the car moving on units of inches/second

User Tukra
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Given that the radius of the wheel is 10 inches and its rate of turn is 8 revolutions per second.

The speed of the car= 8 times the circumference of the wheel.

Recall the formula for the circumference of the circle is


C=2\pi r

Substitute r=10, we get


C=2*3.14*10=62.8\text{ inches.}

the circumference of the wheel is 62.8 inches.

The speed of the car= 8 times the circumference of the wheel.

The speed of the car= 8 times 62

User Manuel Bernhardt
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