An amusement park ride has a diameter of 16 meters and revolves at 15 rpm (revolutions per minute).How fast is a rider moving if she sits at the outermost part of the ride?
A)29.4 m/s
B)1.07 m/s
C)225 m/s
D)9.81 m/s
E)12.6 m/s

Question

Quizplus · Accepted Answer

The circumference of the ride is π times the diameter, which is 16π meters. At 15 revolutions per minute, the speed is 15 * 16π meters per minute. Converting to meters per second, the speed is (15 * 16π) / 60 = 12.6 m/s.

An Amusement Park Ride Has a Diameter of 16 Meters