Physics · 2019
JEE Main · 9 April 2019, Shift 2 · Q4
A particle of mass ' m ' is moving with speed ' 2 v ' and collides with a mass ' 2 m ' moving with speed ' v ' in the same direction. After…
A particle of mass ' m ' is moving with speed ' $\displaystyle 2 v$ ' and collides with a mass ' $\displaystyle 2$ m ' moving with speed ' $\displaystyle v$ ' in the same direction. After collision, the first mass is stopped completely while the second one splits into two particles each of mass ' $\displaystyle \mathrm{m}^{\prime}$, which move at angle $\displaystyle 45^{\circ}$ with respect to the original direction.The speed of each of the moving particle will be :
Official answer
(1)
$\displaystyle 2 \sqrt{2} v$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.