v1 p1 v2 p2 1 2 1 2 p1 + ρ v1 = p2 + ρ v2 2 2
F
v1
1 p2 − p1 = ρ ( v12 − v22 ) > 0 2 A
v2
1 F = ( p2 − p1 ) A = ρ ( v12 − v22 ) 2
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