A bullet loses 1 n th of its velocity passing through one plank. Considering uniform retardation, the number of such planks that are required to stop the bullet can be:

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Aicharya · Accepted Answer

Let t be the thickness of the plank &#965; 0 1 - 1 n 2 = &#965; 0 2 - 2 a t &#8756; &#160; 2 a t = &#965; 0 2 - &#965; 0 2 1 - 1 n 2 If m number of planks are required to stop a bullet, then 0 = &#965; 0 2 - 2 a t m &#8756; &#160; m = &#965; 0 2 2 a t = &#965; 0 2 &#965; 0 2 1 - 1 - 1 n 2 = n 2 n 2 - n - 1 2 = n 2 2 n - 1

A bullet loses 1 n th of its velocity passing through one plank. Considering uniform retardation, the number…

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