Physics · 2023
JEE Main · 10 April 2023, Shift 2 · Q40
A person travels x distance with velocity v_1 and then x distance with velocity v_2 in the same direction. The average velocity of the person is v,…
A person travels $\displaystyle x$ distance with velocity $\displaystyle v_1$ and then $\displaystyle x$ distance with velocity $\displaystyle v_2$ in the same direction. The average velocity of the person is v , then the relation between $\displaystyle \mathrm{v}, \mathrm{v}_1$ and $\displaystyle \mathrm{v}_2$ will be.
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \frac{2}{v}=\frac{1}{v_1}+\frac{1}{v_2}$
More from Motion in One Dimension
- A body is moving with constant speed, in a circle of radius 10 m. The body completes one revolution in 4 s. At the end of 3rd second, the…2023
- Given below are two statements: Statement I: Area under velocity- time graph gives the distance travelled by the body in a given time. Statement II:…2023
- A body projected vertically upwards with a certain speed from the top of a tower reaches the ground in t_1. If it is projected vertically downwards…2024
- A particle moves in a straight line so that its displacement x at any time t is given by x^2=1+t^2. Its acceleration at any time t is x^-n where n=…2024
- A body starts moving from rest with constant acceleration covers displacement S_1 in first (p-1) seconds and S_2 in first p seconds. The displacement…2024
- A train starting from rest first accelerates uniformly up to a speed of 80 km / h for time t, then it moves with a constant speed for time 3 t. The…2024
- The motion of an airplane is represented by velocity-time graph as shown below. The distance covered by airplane in the first 30.5 second is ____ km.2025
- The velocity time graph of a body moving in a straight line is shown in figure. The ratio of displacement to distance travelled by the body in time 0…2023
JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.