A hiker rides 700, m north, 300 meast, 400 ,m north 600, m west, 1200, m south, 300, m east and fina

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7. MOTION

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A hiker rides $700\, m$ north, $300$ meast, $400 \,m$ north $600\, m$ west, $1200\, m$ south, $300\, m$ east and finally $100\, m$ north. Draw the path of motion of the biker. What distance did he cover ? What was his displacement ?

Option A

Option B

Option C

Option D

Solution

$(ii)$ Distance travelled by the biker

$= OA + AB + BC + CD + DE+ EF + FO$

$=700 m +300 m +400 m+600 m +1200 m +300 m +100 m$

$=3600 \,m$

$(iii)$ Displacement of biker $=0$ (zero).

Standard 9

Science

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