A hydrogen balloon is flying eastward w...

A hydrogen balloon is flying eastward with speed `12 m.s^(-1)` . When wind starts blowing from north to south with speed `5 m.s^(-1)` what is the resultant velocity of balloon ?

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The correct Answer is:

`13 m s^(-1) , theta = tan^(-1) (5/12)` South of east.

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