Question

From a rifle of 4kg a bullet of mass 0.01kg is fired with a velocity of 35 m/s calculate the recoil velocity of a rifle ?

Answer 1

Answer:

70 is the kg of mass 0.01

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Answer 2

Answer:

$\bf{\red{\underline{Given:}}}$

Mass of rifle = 4kg

Mass of bullet = 0.01 kg

velocity of bullet = 35 m/s

$\bf{\pink{\underline{To\;Find}:}}$

Recoil velocity of the rifle

$\bf{\blue{\underline{Solution:}}}$

$\boxed{\green{mass\;of\; bullet \times velocity\;of\;bullet=mass\;of\;gun \times recoil\;velocity}}$

$\displaystyle{\implies 0.01 \times 35 = 4\times R}$

$\displaystyle{\implies 0.35=4\times R }$

$\displaystyle{\implies \frac{0.35}{4}=R \implies R = \frac{\cancel 0.35}{\cancel 4}}$

$\displaystyle {\implies R = 0.0875m/s}$