You are driving your race car around a circular test track.W

You are driving your race car around a circular test track.Which would have a greater effect on the magnitude of your acceleration,doubling your speed or moving to a track with half the radius?Why?

毛孩tt大 1年前已收到2个回答举报

我是薄荷橙子幼苗

共回答了24个问题采纳率：95.8% 举报

你在弧形测试赛道上开着赛车,如何获得更大的加速效果?
A、增大两倍的速度；B、开到只有原来一半半径的赛道上
为甚么?
a=V^2/R
aA=4a原
aB=2a原
可知,增大两倍的速度对加速度的影响比轨道半径减半要好

1年前

路雅文幼苗

共回答了2个问题举报

a=v^2/r
第一个是v加倍
第二个是r减半
你觉得那个a增加的最多？

1年前

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