Physics · 2019
JEE Main · 10 April 2019, Shift 2 · Q5
A bullet of mass 20 g has an initial speed of 1 ms^-1, just before it starts penetrating a mud wall of thickness 20 cm. If the wall offers a mean…
A bullet of mass $\displaystyle 20$ g has an initial speed of $\displaystyle 1 \mathrm{~ms}^{-1}$, just before it starts penetrating a mud wall of thickness $\displaystyle 20$ cm. If the wall offers a mean resistance of $\displaystyle 2.5 \times 10^{-2} \mathrm{~N}$, the speed of the bullet after emerging from the other side of the wall is close to :
Official answer
(1)
$\displaystyle 0.7 \mathrm{~ms}^{-1}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.