Physics · 2022
JEE Main · 29 June 2022, Shift 1 · Q31
Two balls A and B are placed at the top of 180 m tall tower. Ball A is released from the top at t =0 s. Ball B is thrown vertically down with an…
Two balls A and B are placed at the top of $\displaystyle 180$ m tall tower. Ball A is released from the top at $\displaystyle \mathrm{t}=0 \mathrm{~s}$. Ball B is thrown vertically down with an initial velocity ' u ' at $\displaystyle \mathrm{t}=2 \mathrm{~s}$. After a certain time, both balls meet $\displaystyle 100$ m above the ground. Find the value of ' $\displaystyle u$ ' in $\displaystyle \mathrm{ms}^{-1}$. [use $\displaystyle \mathrm{g}=10 \mathrm{~ms}^{-2}$ ] :
Official answer
(4)
$\displaystyle 30$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.