如图所示倾角为37°足够长的斜面体固定在水平地面上小木块在沿斜面�上的恒定外力f作用下从斜面上的a点由静止开始�上作匀加速运动前进了 Template




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tomski如图所示倾角为37°足够长的斜面体固定在水平地面上小木块在沿斜面�上的恒定外力f作用下从斜面上的a点由静止开始�上作匀加速运动前进了 coloring