[填空题]
A cyclist accelerates from rest at a rate: brq5(leq+rrb+9,ar6oz isw of 1kb6: ee9lr6v8s+ld vb 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.] $m/s$
Post time 2025-2-18 20:00:22
