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[" A particle is moving in "x" -y plane at "2m/s" along "],[x" -axis."2" seconds later,its velocity is "4m/s" in a "],[" direction making "60^(@)" with positive "x" -axis its "],[" average acceleration for this positive "x" -axionits "],[" (1) "sqrt(5)m/s^(2)" ,along "y" -axis "],[" (3) "sqrt(5)m/s^(2)" ,along at "60^(@)" with positive "x" -axis "],[" (4) "3m/s^(2)" ,at "60^(@)" with positive "x" -axis."]

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