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प्रश्न
A body travels a distance of 3 km towards East, then 4 km towards North and finally 9 km towards East.
What is the resultant displacement ?
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उत्तर
The body travels a total distance of 12 km east, which means towards the x-axis, on a Cartesian plane. It travels a distance of 4 km in north direction, which means towards y-axis.
Resultant displacement :
`sqrt(12^2+4^2)`
= `sqrt(144 + 16)`
= `sqrt(160)`
= 12.65 km
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