Question

An aeroplane flies 400m east and 300m south and then flies 1200m upwards then net displacement is
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Answer 1

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400 m towards east,300 m towards south and 1200 metre upwards So displacement for this is 900 m
And the displacememt for first flying, is
$= \sqrt{ {400}^{2} + {300}^{2} } \\ = \sqrt{250000} \\ = 500$
So net displacement is 900-500=400