Sebuah mobil bergerak dengan kecepatan 54km/jam,bila massanya 3.200kg.hitunglah energi kinetik mobil tersebut!
MaulanaRahman
Diketahui: m = 3200 kg v = 54 km/jam = 54 x 1000m/3600s = 54000m/3600s = 15m/s
ditanya : Ek?
penyelesaian :
Ek = 1/2 mv² Ek = 1/2 x 3200 x 15² Ek = 1600 x 225 Ek = 360.000 J
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yujin
Dik = m =3.200 kg v = 54 km/jam = 54.000 m : 3.600 detik = 15 m/s Dit = Ek = ? Jawab : Ek = 1/2 × m × v² Ek = 1/2 × 3.200 × (15)² Ek = 1.600 × 225 Ek = 360.000 joule
m = 3200 kg
v = 54 km/jam = 54 x 1000m/3600s = 54000m/3600s = 15m/s
ditanya : Ek?
penyelesaian :
Ek = 1/2 mv²
Ek = 1/2 x 3200 x 15²
Ek = 1600 x 225
Ek = 360.000 J
v = 54 km/jam = 54.000 m : 3.600 detik = 15 m/s
Dit = Ek = ?
Jawab :
Ek = 1/2 × m × v²
Ek = 1/2 × 3.200 × (15)²
Ek = 1.600 × 225
Ek = 360.000 joule