[填空题]
A cyclist acceleratec amw8(jw. jk;7m:kdos fro,36h ,xj 2,gwkg qjxram 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.] $m/s$
Post time 2025-2-18 20:00:22
