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r2 : x2i+y2j : 8i+6j
DeltaR : r2-r1 : 8i+6j-(2i+4j) : 6i+2j
V Rata Rata : Delta r/Delta t : 6i + 2j / 2-0 : 3i + j (C)
Jadikan jawaban tercerdas ya :) Terimakasih :)