October 2018 2 11 Report
Benda a dan b yang massanya sama bergerak dg kecepatan berbeda. Jika energi kinetik benda a=9 joule dan energi kinetik b =16 joule,maka perbandingan kecepatan a dg benda b adalah
A.2:3
B.3:4
C.4:3
D.9:16

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