A particle of mass has an initial velocity

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A particle of mass 0.50 kg0.50\,\text{kg} has an initial velocity u=4 i^+3 j^ m s−1\mathbf{u} = 4\,\hat{i} + 3\,\hat{j}\,\text{m\,s}^{-1}. A constant force F=2 i^ N\mathbf{F} = 2\,\hat{i}\,\text{N} acts on it for 2 s2\,\text{s}. What is the particle’s speed immediately after the force ceases? (a) 15.0\,\text{m\,s}^{-1} (b) 6.7\,\text{m\,s}^{-1} (c) 12.4\,\text{m\,s}^{-1} (d) 11.7\,\text{m\,s}^{-1}

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