Physics · 2014
JEE Main · 12 April 2014, Shift 1 · Q3
Three masses m, 2m and 3m are moving in x-y plane with speed 3 u, 2 u, and u respectively as shown in figure. The three masses collide at the same…
Three masses m, 2m and 3m are moving in $\displaystyle x-y$ plane with speed $\displaystyle 3 \mathrm{u}, 2 \mathrm{u}$, and u respectively as shown in figure. The three masses collide at the same point at P and stick together. The velocity of resulting mass will be :
Official answer
(4)
$\displaystyle \frac{\mathrm{u}}{12}(-\hat{i}-\sqrt{3} \hat{j})$
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JEE Main 2014 Physics question, with the answer from NTA’s final answer key. Where our answers come from.