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h1 = 80 m, V1 = 0 (GJB)
h2 = 60 m, V2 = __ ?
g = 10 m/s^2
V2 = √( 2 g (h1 - h2)
V2 = √( 2 (10) (80 - 60)
V2 = √( 2 (10) (20)
V2 = 20 m/s ← jawaban
Cat:
Persamaan dapat diturunnkan dari persamaan dasar GLBB atau dari HKE.
Ok ?