A train travels in the first

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

Problem

A train travels 2.0 km2.0\,\text{km} in the first 120 s120\,\text{s}, then 3.0 km3.0\,\text{km} in the next 180 s180\,\text{s}. Determine its average velocity for the entire 300 s300\,\text{s} journey. (a) 18.3 m s−118.3\,\text{m\,s}^{-1} (b) 20.0 m s−120.0\,\text{m\,s}^{-1} (c) 16.7 m s−116.7\,\text{m\,s}^{-1} (d) 14.3 m s−114.3\,\text{m\,s}^{-1}

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