在以速度v0匀速上升的电梯里,一小球从电梯地板以速度v1(v1>v0)被竖直�上弹出后又落回到电梯地板,这一过程中小球没有触碰电梯天花板,不计 Template




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tomski在以速度v0匀速上升的电梯里,一小球从电梯地板以速度v1(v1>v0)被竖直�上弹出后又落回到电梯地板,这一过程中小球没有触碰电梯天花板,不计 coloring