A student walks east in

PHYSICS · Single correct · GCSE · Physics · Forces · Forces

Problem

A student walks 60 m60\,\text{m} east in 1 min1\,\text{min}, then 80 m80\,\text{m} north in 2 min2\,\text{min}, and finally 60 m60\,\text{m} west in 1 min1\,\text{min}. Which of the following pairs gives (average speed, magnitude of average velocity) for the entire 4 min4\,\text{min} journey? (a) 0.33 m/s,  0.83 m/s0.33\,\text{m/s},\;0.83\,\text{m/s} (b) 0.83 m/s,  0.83 m/s0.83\,\text{m/s},\;0.83\,\text{m/s} (c) 0.83 m/s,  0.33 m/s0.83\,\text{m/s},\;0.33\,\text{m/s} (d) 1.11 m/s,  0.44 m/s1.11\,\text{m/s},\;0.44\,\text{m/s}

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