Physics · 2015
NEET 2015 · 25 July · Code C · Q22
A ball is thrown vertically downwards from a height of 20 m with an initial velocity v_0. It collides with the ground, loses 50 percent of its energy…
A ball is thrown vertically downwards from a height of $\displaystyle 20$ m with an initial velocity $\displaystyle v_0$. It collides with the ground, loses $\displaystyle 50$ percent of its energy in collision and rebounds to the same height. The initial velocity $\displaystyle v_0$ is : (Take $\displaystyle \mathrm{g}=10 \mathrm{~ms}^{-2}$)
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 20 \mathrm{~ms}^{-1}$
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NEET (UG) 2015 Physics question, with the answer from NTA’s final answer key. Where our answers come from.