December 2018 1 20 Report
Bola pejal massa 2kg (I = 2/5 MR2), diletakkan pd puncak bidang miring kasar dgn kemiringan 30°. pjng lintasan yg ditempuh smpai ke dasar bidang miring 14m, kecepatan bola sesaat pda bidang miring brpa?
pakai cara tolong, blm mudeng soalnya..

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