A particle moves along the –axis with velocity

PHYSICS · Single correct · CBSE · Physics · Motion in a Straight Line · Motion in a Straight Line

Problem

A particle moves along the xx–axis with velocity v(t)=3t−6 m s−1v(t)=3t-6\,\text{m s}^{-1}. Calculate its instantaneous speed at t=1 st=1\,\text{s}. (a) −3 m s−1-3\,\text{m s}^{-1} (b) 9 m s−19\,\text{m s}^{-1} (c) 3 m s−13\,\text{m s}^{-1} (d) 4.5 m s−14.5\,\text{m s}^{-1}

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