A bicycle has wheels that are 60 cm in diameter. What is the angular speed of these wheels when it is moving at 4.0 m/s

13.33 rad/s

Explanation:

Applying,

v = ωr Equation 1

Where v = linear speed, ω = angular speed and r = radius.

Note that,

r = d/2 Equation 2

Where d = diameter of the wheel.

Substitute equation 2 into equation 1

v = ωd/2 Equation 3

make ω the subject of the equation

ω = 2v/d Equation 4

Given: v = 4 m/s, d = 60 cm = 0.6 m

Substitute these values into equation 4

ω = 2(4)/0.6

ω = 13.33 rad/s