Tolong dong dijawab no 18 , 19 dan 20 .
buat jalannya ya please
Jawaban Terkonfirmasi
No 19)
Epotensial = m g h
Ep = kg. m/s² . m
Ep= M.L/T² . L
Ep= ML²T-2
Jawaban Terkonfirmasi
18][
m = 1000 kg
Vo = 0
Vt = 5 m/s
W = __ ?
Usaha
W = ΔEk
W = Ekt – Eko
W = ½ m Vt² – ½ m Vo²
W = ½ (1000) (5)² – 0
W = 12500 J ← jawaban [d]
19][
Energi potensial
Ep = m g h
dimensi m → [M]
dimensi g → [L] [T]^-2
dimensi h → [L]
dimensi Ep → [M] [L][T]^-2 [L] = [M] [L]^2 [T]^-2 ← jawaban [d]
20][
m = 10 kg
h = 3 kg
g = 10 m/s²
W = __ ?
W = ΔEp
W = Ep – 0
W = m g h
W = (10) (10) (3)
W = 300 J ← jawaban [a]
Ok ?