A car covers AB distance with first one-third at velocity $v_1$ ms$^{-1}$, second one-third at $v_2$ ms$^{-1}$ and last one-third at $v_3$ ms$^{-1}$. If $v_3$=3$v_1$, $v_2$=2$v_1$ and $v_1$=11 ms$^{-1}$ then the average velocity of the car is __________ ms$^{-1}$.

JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 28 June 2022, Shift 2, Physics Q60

Question 60 of 90 in this shift, Physics question 30 of 30, Section B.

A car covers AB distance with first one-third at velocity

v_1

^{-1}

, second one-third at

v_2

^{-1}

and last one-third at

v_3

^{-1}

. If

v_3

v_1

v_2

v_1

and

v_1

=11 ms

^{-1}

then the average velocity of the car is __________ ms

^{-1}

The figure, in words

A horizontal line from point A (circle) on the left to point B (circle) on the right, divided by two tick marks into three equal parts labelled v1, v2, v3.

Official answer

NTA final key.

Chapter: Motion in a Straight Line
Topic: Kinematics in 1D
Idea tested: Average vs Instantaneous Velocity

JEE Main 28 June 2022, Shift 2, Physics Q60

Same idea in other shifts