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• Energi kinetik
m1 = 300 kg, v1 = 2 m/s
m2 = 200 kg, v2 = 3 m/s
Ek1 : Ek2 = __?
Energi kinetik
Ek = ½ m v²
perbandingan energi kinetik
Ek1 / Ek2
= (½ m1 v1²) / (½ m2 v2²)
= (m1 v1²) / (m2 v2²)
= (m1 / m2) • (v1 / v2)²
= (300/200) • (2/3)²
= (3/) • (2/3)²
= 2/3
= 2 : 3 ← jwb