Physics · 2022
JEE Main · 30 June 2022, Shift 1 · Q31
At t =0, truck, starting from rest, moves in the positive x -direction at uniform acceleration of 5 ms^-2. At t =20 s, a ball is released from the…
At $\displaystyle \mathrm{t}=0$, truck, starting from rest, moves in the positive $\displaystyle x$-direction at uniform acceleration of $\displaystyle 5 \mathrm{~ms}^{-2}$. At $\displaystyle \mathrm{t}=20 \mathrm{~s}$, a ball is released from the top of the truck. The ball strikes the ground in $\displaystyle 1$ s after the release. The velocity of the ball, when it strikes the ground, will be :
(Given $\displaystyle \mathrm{g}=10 \mathrm{~ms}^{-2}$ )
Official answer
(1)
$\displaystyle 100 \hat{i}-10 \hat{j}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.