Physics · 2020
JEE Main · 4 September 2020, Shift 2 · Q2
A small ball of mass m is thrown upward with velocity u from the ground. The ball experiences a resistive force mk v^2 where v is its speed. The…
A small ball of mass $\displaystyle m$ is thrown upward with velocity u from the ground. The ball experiences a resistive force $\displaystyle \mathrm{mk} v^2$ where $\displaystyle v$ is its speed. The maximum height attained by the ball is :
Official answer
(3)
$\displaystyle \frac{1}{2 \mathrm{k}} \ln \left(1+\frac{\mathrm{ku}^2}{\mathrm{~g}}\right)$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.