Question

From a rifle of mass 4 kg, a bullet
of mass 50 g is fired with an
initial velocity of 35 m s-l.
Calculate the initial recoil velocity
of the rifle.​

Answer 1

Answer:

HEY MATE

Step-by-step explanation:

$by \: conservtion \: of \: momenum...$

$momentum \: of \: bullet = momentum \: of \: gun$

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$momentum \: of \: bullet = mass \: of \: bullet \times velocity \: of \: bullet$

$momentum \: of \: bullet = 0.05kg \: \times 35ms^{ - 1}$

$= 1.75 \: kg \: ms^{ - 1}$

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$mometum \: of \: gun = mass \: of \: gun \: \times recoil \: velocity \: of \: gun$

$let \: recoil \: velocity \: be \: x$

$momentum \: of \: gun = 4 \times x$

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$4 \times x = 1.75$

$x = 0.4375 \: ms^{ - 1}$

$hence \: recoil \: velocity \: of \: gun \: = 0.4375 \: ms^{ - 1}$

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