A bike wheel with a radius of 1 meter rolls, rotating through an angle of 1 radian in one second. The linear speed of the bike is
A. 1 m/s
B. 2 m/s
C. 2pi m/s
D. 57.3 m/s
E. warp speed


From this, infer a general formula to convert between angular speed and linear speed for a wheel or circular object.