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  • A body travel 100km southwest and then km in the northern direction. The total magnitude of the veloci

A body travel 100km southwest and then 50\sqrt{2} km in the northern direction. The total magnitude of the velocity if the time taken is 1 hr.

Option: 1

100+50\sqrt{2}\;\: km/hr\;


Option: 2

\; \; 100-50\sqrt{2}\;\: km/hr\;


Option: 3

\; \; 50\sqrt{2}\; km/hr\;


Option: 4

\; 100\; km/hr


Answers (1)

As we learned

 Average \ \ Velocity=\frac{Total \ \ Displacement}{Total \ \ time \ \ taken}

So 

Displacement   

\\*=OB=50\sqrt{2}\; km\\*\therefore Average\; \; velocity\; \; =\frac{50\sqrt{2}\, km}{1\, hr}=50\sqrt{2}\; km/hr

 

Posted by

Kshitij

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