# Keep Moving !!!!!

The potential energy of a particle of mass $$5kg$$ moving in the $$XY~plane$$ is given by $$U=(-7x+2y)J$$ where $$x$$ and $$y$$ are given in $$metres(m)$$ . If the particle starts from rest from the origin , then what is the velocity of the particle at time $$t=2s$$ ?????

Note : Give your answer in $$m/s$$ and avoid the units.....just write the answer as an integer !!!!!

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