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Verified answer
Diket :Massa benda, m = 6 kg
Kecepatan awal, Vo = 5 m/s
Kecepatan akhir, V = 0 (berhenti)
Tanya :
Usaha, W = __?
Jawab :
W = ΔEk
W = 1/2.m.(V² - Vo²)
W = 1/2•6•(0² - 5²)
W = 3•(- 25)
W = - 75 Joule
(Tanda negatif artinya usaha yg dibutuhkan)
Jawaban : A
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FZA
Verified answer
Teorema usaha energiusaha = energi kinetik
W = Ek
W = (1/2)mV²
= (1/2)(6)(5²)
= 75 joule
jawab : A