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Anoop is moving due east with a velocity...

Anoop is moving due east with a velocity of `1 m//s` and Dhyani is moving due west with a velocity of `2 m//s.` what is the velocity of Anoop with respect to Dhyani?

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The correct Answer is:
A
It is a one dimensional motion. So, let us choose the east direction as positive and the
west as negative. Now, given that `v_A`=velocity of Anoop=`1m//s`
and `v_D`=velocity of Dhyani=`-2 m//s`
Thus, `v_(AD)` =velocity of Anoop with respect to Dhyani
`=v_A-v_D=1-(-2)=3 m//s`
Hence, velocity of Anoop with respect to Dhyani is `3 m//s`due east.
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