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500= ½ × 50× V2
500= 25× v2
hasilnya aku g bs tulis soalnya pke android
coba hitung sendiri
mohon dimaklumi
D1 m = 50 kg
Ek = 500 J
D2 v....?
D3.
Jadi, kecepatan anak tersebut 2√5 m/s