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no 12 Ama 13 yaa
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. thankss
no 12 Ama 13 yaa . . . thankss

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  • 12.EK=1/2MVV
    m1=2m
    m2=m
    v1&v2=108km/jam
    EK2=300KJ
    DIT:EK1=?
    EK2=300KJ
    300=1/2*M*108*108
    2*300KJ=108M*108
    M=600/108*108

    EK1=(1/2)(600/108*108)(108*108)
    EK1=1/2*600
    EK1=300KJ

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