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Oscillations

A bullet of m...

Question

A bullet of mass $20 g$ moving with a speed of $150 m s^{- 1}$ strkes a block and comes to rest after piercing $10 c m$ into it. Find the average forces of resistance offered by the block

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Solution

$w = △ K . E$
$= F \times [\frac{10}{100}]$
$= \frac{1}{2} [\frac{20}{1000}] [(150) \times (150)]$
$F = 2250 N$

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