Jawapan

2016-03-09T21:45:52+08:00
Sama ada tenaga kinetik, tenaga keupayaan graviti atau tenaga kinetik dan keupayaan graviti
sorry*
Laaa ada apa jaa?
twiiter, facebook, no insta (sebab malas), no wechat, idk what else
Fb then haha mine; Amira Shahira Shahrom
okay ty will add!