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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 , 6 Years ago
Grade 12th pass
anser 1 Answers
Eshan

Last Activity: 6 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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