A boy jogs north in and immediately jogs south in

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A boy jogs 300 m300\,\text{m} north in 2 min2\,\text{min} and immediately jogs 400 m400\,\text{m} south in 3 min3\,\text{min}. Find the magnitudes of his average speed and average velocity for the entire 5 min5\,\text{min} journey. (a) 2.3 m/s,  2.3 m/s2.3\,\text{m/s},\;2.3\,\text{m/s} (b) 0.33 m/s,  2.3 m/s0.33\,\text{m/s},\;2.3\,\text{m/s} (c) 2.3 m/s,  0.33 m/s2.3\,\text{m/s},\;0.33\,\text{m/s} (d) 2.36 m/s,  0.14 m/s2.36\,\text{m/s},\;0.14\,\text{m/s}

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