A pilot performs an evasive maneuver by diving vertically at 310 m/s.If he can withstand an acceleration of 9.0 g's without blacking out,at which altitude must he begin to pull out of the dive to avoid crashing into the sea?

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Apilotperformsanevasivemaneuverbydivingverticallyat310m/s.Ifhecanwithstandanaccelerationof9.0g''swith

A pilot performs an evasive maneuver by diving vertically at 310 m/s.If he can withstand an acceleration of 9.0 g's without blacking out,at which altitude must he begin to pull out of the dive to avoid crashing into the sea?
A pilot performs an evasive maneuver by diving vertically at 310 m/s.If he can withstand an acceleration of 9.0 g's without blacking out,at which altitude must he begin to pull out of the dive to avoid crashing into the sea?

A pilot performs an evasive maneuver by diving vertically at 310 m/s.If he can withstand an acceleration of 9.0 g's without blacking out,at which altitude must he begin to pull out of the dive to avoid crashing into the sea?
设自由落体时间为T
S1=1/2GT2
S2=V2/2a V=GT a=9G
S1+S2=310
联立
GT2=558
1/2GT2=279
310-279=31m
我不是很了解这里的 withstand 的意思 是说他能承受9G的加速度呢 还是说他能制造出9G的加速度 感觉怪怪的- -

一名飞行员起由潜水垂直方向则为机动规避310米/秒。如果他能在没有黑高度时承受加速度9 g,,在什么时候他必须开始退出为了避免撞到大海的吗?(……抱歉我没看懂0

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