A vehicle travels $4 \mathrm{~km}$ with speed of $3 \mathrm{~km} / \mathrm{h}$ and another $4 \mathrm{~km}$ with speed of $5 \mathrm{~km} / \mathrm{h}$, then its average speed is
Solution
<p>Average speed</p>
<p>$= {{\mathrm{Total\,dis\tan ce}} \over {\mathrm{Total\,time}}}$</p>
<p>$= {8 \over {{4 \over 3} + {4 \over 5}}}$</p>
<p>$= 3.75$ km/h</p>
About this question
Subject: Physics · Chapter: Kinematics · Topic: Motion in a Straight Line
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