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what is the arc length of a point that moves with a constant speed of 60 mph along a circle in 15 minutes.

The arc length is _?_ radians





A race car travels around a circular track at a constant speed with a circumference equal to 3 miles. If the car records a time of 10 minutes for 7 laps, what is the linear speed, to the nearest tenth, of the race car in miles per hour?

 Mar 22, 2019

1) we need to know what the radius of the circle is


2) 7 laps is 21 miles, 10 min is 1/6 hr.  (21miles)/(1/6 hr) = 126 miles/hr

 Mar 22, 2019

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