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v1 = 30
v1x = 30 cos 30 = 15√2
v1y = 30 sin 30 = 15
v2 = 30
v2x = 30 cos 30 = 15√2
v2y = 30 sin 30 = 15
v3 = 40 N
Vx = v3 + v1x - v2x = 40 + 15 - 15√2 = 55 - 15√2
√2 = 1,4 maka 15√2 = 15*1,4 = 21
55 - 15√2 = 55 - 21 = 34
Vy = v1y + v2y = 15 + 15 = 30
R = √1156 + 900 = √2056