(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A gunman shot a bullet with a speed of 10ms^{-1}which just penetrates into a plank of wood. So with what speed should he fire the bullet so that it passes through 10 similar planks?

2. Relevant equations

Newtons equations of motion.

3. The attempt at a solution

v^{2}- u^{2}= 2as

v^{2}is directly proportional to s

So,

v^{2}_{1}/v^{2}_{2}= s_{1}/s_{2}

That means

v^{2}_{2}= 10*10*10

Therefore

v = 10 root 10

Well thats what I have done but I aint sure!!

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# The Gunman

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