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1/2.m.v kuadrat :1/2 m.v kuadrat
v kuadrat : v kuadrat
36 kuadrat : 72 kuadrat
1296 : 5184
216 : 864
108 : 432
12 : 48
1 : 4
V₂ = 76 km/jam = 20 m/s
m₁ = m₂ = m
Dik ; Ek₁ : Ek₂ = ....?
Jwb : Ek₁ : Ek₂ = 1/2.mV₁² :1/2.mV₂²
= V₁² : V₂² = 10² : 20²
= 100 : 400
= 1 : 4