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jadi cara cari kecepatannya = 3 / 0.6
sekitar 5 km / jam
maka 3:2/3 km/jam
maka 3 x 3/2 km/ jam
9/2 km/jam
4, 5 km / jam
kalau jadikan per sekon
(3x1000) m/(40x60) sekon
3.000 m/2400 sekon
1,25 m/sekon