November 2018 2 78 Report
Sebuah sepeda bergerak dengan kecepatan v1 memiliki energi kinetik Ek1. Jika kecepatan seeda diperbesar tiga kali , maka energi kinetik menjadi Ek2 pernyataan yg benar adal...
A. Ek2=3Ek1, B. Ek2=3x1/2xEk1, c.Ek2=9Ek1, D. Ek2=18Ek1
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