m = 2 kg
Vawal = 8 m/s
Vakhir = 15 m/s
Usaha Total = W = .....?
W = Perubahan Energi Kinetik
W = 1/2 x m x (Vakhir² - Vawal²)
W = 1/2 x 2 x (15² - 8²)
W = 1 x (225 - 64)
W = 161 J (Jawaban D)
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Diketahui :
m = 2 kg
Vawal = 8 m/s
Vakhir = 15 m/s
Ditanya :
Usaha Total = W = .....?
Jawab :
W = Perubahan Energi Kinetik
W = 1/2 x m x (Vakhir² - Vawal²)
W = 1/2 x 2 x (15² - 8²)
W = 1 x (225 - 64)
W = 161 J (Jawaban D)