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r₀ = 4i + 2j
Vx = 6t²
Vy = 3t² + 6t
Persamaan kecepatan
V = Vx i + Vy j
V = (6t²) i + (3t² + 6t) j
Persamaan posisi
r = ∫ V dt
r = r₀ + ∫ [ (6t²) i + (3t² + 6t) j ] dt
r = 4i + 2j + (2t³) i + (t³ + 3t²) j
r = (2t³ + 4) i + (t³ + 3t² + 2) j ←