(3)w=0t =1.26×102×10=1.26×1031/s v=Rw=0.15×1.26×103 =1.89×102m/s an=Rw2=0.15×(1.26×103)2 =2.38×105m/s2 at=R0=0.15X1.26X102 =18.9m/s2 结束目录 v=Rω= 0.15×1.26×103 =1.89×102 m/s at = Ra = 0.15×1.26×102 an 2 = Rω = 0.15×(1.26×103) 2 =2.38×105 m/s2 =1.26×102×10=1.26×103 1/s (3) ω =a t =18.9m/s2 结束 目录