Physics · 2021
JEE Main · 25 February 2021, Shift 1 · Q14
An engine of a train, moving with uniform acceleration, passes the signal-post with velocity u and the last compartment with velocity v. The velocity…
An engine of a train, moving with uniform acceleration, passes the signal-post with velocity $\displaystyle u$ and the last compartment with velocity $\displaystyle v$. The velocity with which middle point of the train passes the signal post is :
Official answer
(3)
$\displaystyle \sqrt{\frac{v^2+u^2}{2}}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.