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Verified answer
Ek1 = Ek21/2xm1xv1^2 = 1/2xm2xv2^2
1/2x2x100= 1/2x4x v2^2
100= 2 v2^2
50 = v2^2
V2= 5 akar 2 m/s.
Diketahui
• m1 = 2 kg
• m2 = 4 kg
• v1 = 10 m/s
Ditanya
V2 =__?
Jawab
Tentukan energi kinetik benda 1 yaitu
Ek1 = 1/2. m. v²
Ek1 = 1/2. 2. 10²
Ek1 = 100 J
Maka, karena Ek1 = Ek2, maka
Ek2 = 1/2. m. v²
100 = 1/2. 4. v²
100 = 2. v²
100/2 = v²
√50 = v