問(wèn)答題一物體由靜止開(kāi)始作直線運(yùn)動(dòng),經(jīng)t/s(秒)后的速度為3t2m/s,問(wèn):物體與出發(fā)點(diǎn)的距離為360m時(shí)經(jīng)過(guò)了多少時(shí)間?

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