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AIIMS MBBS> Two cars A and B approach a road crossing...

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Two cars A and B approach a road crossing with 5m per sec and 10m per sec if angle between roads is 60 degree the relative speed of car A wrt car B is

Prachi Shukla , 7 Years ago

Grade 12th pass

1 Answers

Eshan

Last Activity: 7 Years ago

Dear student,

Relative velocity of A wrt B is $\vec{v_A}-\vec{v_B}$

Hence relative speed= magnitude of the relative velocity= $\left|\vec{v_A}-\vec{v_B}\right|$

$=\sqrt{v_A^2+v_B^2+2v_Av_Bcos60^{\circ}}=\sqrt{5^2+10^2+2(5)(10)\dfrac{1}{2}}=\sqrt{175}m/s$

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