Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 9.1 rad/s and that you have been riding for a "distance" of 8.6 x 103m. The wheel has a radius of 0.45 m. For how many minutes have you been riding your bike?

Answer 1

v=ωR
t=s/v= s/ ωR=8600/9.1•0.45=2100 s=35 min