Jawabanmu

2014-08-08T22:57:46+07:00
Vt^2 - v0^2 = 2as
vt^2 = 2 g sin θ s
vt^2 = 2. 10 m/s^2 . sin 30 10 m
vt^2 = 2. 10. 1/2.10
vt^2 = 100
vt = 10 m/s