October 2018 1 621 Report
Seorang tentara mengamati sebuah
baling2 helikopter yang berputar 900 putaran per menit.

A. berapakah kecepatan sudut baling-baling?
B. berapakah kelajuan linear sebuah titik diujung baling2 jika radius baling-baling 3 m?
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