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menit kedua= 150 m
menit ketiga= 250 m
Kecepatan menit pertama = 100/60 = 1,66
Kecepatan menit kedua = 150/120 = 1,25
Kecepatan menit ketiga = 250/180 = 1,38
Kecepatan rata-rata = 1,66 + 1,25 + 1,38 = 4,29 m/s