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Verified answer
Materi: Energi KinetikJawaban C
Verified answer
KINEMATIKA• GP
Vo = 50 m/s
α = 37° → sin α = 3/5
t = 1 s
Ek' = __?
ketinggian setelah bergerak selama t
y = Vo sin α t - ½ g t²
y = 50 • (3/5) • 1 - ½ • 10 • 1²
y = 30 - 5 = 25 m
HKE
Ek' + Ep' = Eko + Epo
Ek' = Eko - Ep'
Ek' = ½ m Vo² - m g y
Ek' = ½ • 0,02 • 50² - 0,02 • 10 • 25
Ek' = 25 - 5 = 20 J ← jwb