A body has a velocity of 5 ,m/s at

PHYSICS · Single correct · CBSE · Physics · Motion · Motion

Problem

A body has a velocity of 5\,m/s at t=0t=0. It experiences a constant acceleration of 3\,m/s2^2 for the next 4\,s and then an acceleration of −4 m/s2-4\,\text{m/s}^2 for 3\,s. Its velocity at t=7 st=7\,\text{s} is (a) 17 m/s17\,\text{m/s} (b) 5 m/s5\,\text{m/s} (c) −2 m/s-2\,\text{m/s} (d) 29 m/s29\,\text{m/s}

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