[填空题]
A cyclist accelerateq*l4 mn0holus6 ahr.z/d5x - cs fro btp/ dqq0l+x+su0j* :y-r2qb 9lk nrtm rest at a rate of 1 m/$s^2$ How fast will a point on the rim of the tire at the top be moving after 3.0 s? [Hint: At any moment, the lowest point on the tire is in contact with the ground and is at rest — see Fig. 8–51.] $m/s$