Physics · 2019
JEE Main · 12 April 2019, Shift 2 · Q2
A particle is moving with speed v= b √ x along positive x -axis. Calculate the speed of the particle at time t =τ (assume that the particle is at…
A particle is moving with speed $\displaystyle v=\mathrm{b} \sqrt{x}$ along positive $\displaystyle x$-axis. Calculate the speed of the particle at time $\displaystyle \mathrm{t}=\tau$ (assume that the particle is at origin at $\displaystyle \mathrm{t}=0$ ).
Official answer
(3)
$\displaystyle \frac{\mathrm{b}^2 \tau}{2}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.