1. A wheel has a 2cm diameter. the speed of a point on its rim is 11 m/s. What is its angular speed?

2. A horse on a merry-go-round is 7m from the center and travels at 10km/h. What is its angular speed?

3. A water wheel has a 10ft radius. The wheel revolves 16 times per minute. What is the speed of the river in mi/hr?