Jawabanmu

2014-04-06T17:53:29+07:00
Fa = 1/2 ρ. (v2^2 - v1^2) A
= 1/2 . 1 . (70^2 - 50^2) 25
= 1/2 . (4900-2500) 25
= 1/2 . 2400 . 25
= 1/2 . 60000
= 30.000 = 3.10^4
1 5 1