September 2018 1 84 Report
TOLONG BANTU AKU YAH.
David berlari menurut garis lurus dengan kecepatan rata rata 5m/sselama 4 mnt.kemudian lanjut dengan kecepatan 4m/s selama 2 mnt dalam arah yg sama .hitung kecepatan rata-rata dan total perpindahan David???
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