kerjain pakai caranya
Jawaban :
Penjelasan:
h = 20 m - 15 m = 5 m
Vt² = Vo² + 2gh
Vt² = 0² + 2 . 10 . 5
Vt² = 100
Vt = 10 m/s
W = (½ . m . Vt²) - (½ . m . Vo²)
W = ½ . m . (Vt² - Vo²)
W = ½ . 4 . (100 - 0)
W = 2 . 100
W = 200 J
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