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45 = 1/2 . 10 . t²
45 = 5 . t²
9 = t²
3 = t
Vt = Vo . t + g t
Vt = 0 + 10 . 3
Vt = 30 M/s
V² = (0)² + 2(10)(45)
V² = 0 + 900
V = √900
V = 30 m/s smoga membantu Mba :)