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​Q18. A particle of mass 2 kg is subjected to a two dimensional conservative force given by.
     ${\mathrm{F}}_{\mathrm{x}} = -2\mathrm{x} +2\mathrm{y} , {\mathrm{F}}_{\mathrm{y}} =2\mathrm{x} - {\mathrm{y}}^2.$ (x , y in m and F in N). If the particle has kinetic energy (8/3) J at point (2, 3), find the speed (in m/s) of the particle when it reaches (1, 2).          [16 JP 110140]