1. The problem statement, all variables and given/known data A bicycle wheel has an angular acceleration of 1.4 rad/s^2. If a point on its rim has a tangential acceleration of 49 cm/s^2, what is the radius of the wheel? Answer in units of m. 2. Relevant equations ac=r*a 3. The attempt at a solution 49 cm/s^2=.49m/s^2 r=ac/a=2.8571 But the answer is wrong, where did I mess up?