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QJEEM22Phca89: JEE Main 2022 Physics - Class 11 JEEM22Phca89 Solution: A car covers AB distance with first one-third at velocity v 1…

A car covers AB distance with first one-third at velocity v1 ms −- 1, second one-third at v2 ms −- 1 and last one-third at v3 ms −- 1. If v3 = 3v1, v2 = 2v1 and v1 = 11 ms −- 1 then the average velocity of the car is _____________ ms −- 1.

JEE Main 2022 (Online) 28th June Evening Shift Physics - Motion in a Straight Line Question 53 English

Step-by-Step Verified Solution

vmean=3v1v2v3v1v2+v2v3+v3v1{v_{mean}} = {{3{v_1}{v_2}{v_3}} \over {{v_1}{v_2} + {v_2}{v_3} + {v_3}{v_1}}}

=3×11×22×3311×22+22×33+33×11= {{3 \times 11 \times 22 \times 33} \over {11 \times 22 + 22 \times 33 + 33 \times 11}}

=18= 18 m/sec

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