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Pembahasan :m = 2 kg.
h = 8 m
g = 10 m/s².
ht = 2 meter.
Dit : Ek...........?
Jawaban :
Vt² = 2.g. ht
Vt²= 2.10.2
Vt² = 40
Vt = √ 40 m/s²
Ek = ½mv²
→ = ½. 2.(√40)²
→ = 40 J.