[填空题]
A cyclist accelerates from rest at2ihz9fex58r 0c0 iqopx) 1vz e a rate /h55uok5 -y a kqp)hi)e-dprkof 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.] $m/s$