What is the drag force on a 1.6 m wide,1.4 m high car travel
1个回答
为神马要告诉空气密度捏,
我记得速度小于2.5倍音速的物体,所受空气阻力可以用 f=ksv计算,K一般可取2.937.
只有告诉物体才用到f=CpSV^2/2,其中那个p是空气密度来计算.
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