USAHA DAN ENERGI
▶ Energi Kinetik
v₁ = 20 m/s
Ek₁ = 250 J
v₂ = 40 m/s
Ek₂ = __ ?
Ek₂ / Ek₁ = v₂² / v₁²
Ek₂ / 250 = 40² / 20²
Ek₂ = 4 × 250
Ek₂ = 1000 J ✔
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USAHA DAN ENERGI
▶ Energi Kinetik
v₁ = 20 m/s
Ek₁ = 250 J
v₂ = 40 m/s
Ek₂ = __ ?
Ek₂ / Ek₁ = v₂² / v₁²
Ek₂ / 250 = 40² / 20²
Ek₂ = 4 × 250
Ek₂ = 1000 J ✔