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A uniform force of \(\vec{3i}\ +\ \vec{j}\) \(Newton\) acts on a particle of mass \(2\ kg\) Hence the particle is displaced from position \(\vec{2i}\ +\ \vec{k}\) \(metre\) to position \(\vec{4i}\ +\ \vec{3j}\ -\ \vec{k}\ metre\) . the work done by the force on the particle is
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