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m=100kg
dit; Ek=
Ek=½mv²
=½(10)(100)²
=½(10)(10000)
=½(100000)
=50000 J
mff..jwbannya kalo salah..soalnya pilihannya gak ada....
V=36 KM/JAM MEMJADI 36 X 5/18 = 10 M/S
DIT = ENERGI KINETIK
EK= 1/2 X M X V2
= 1/2 X 100 X 10 KUADRAT
= 50 X 100
= 5000 J