Intext example VI — task. Science CBSE, Class 9.

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A bullet of mass 20 $g$ is horizontally fired with a velocity 150 $m\ s^{-1}$ from a pistol of mass 2 $kg$ .

What is the recoil velocity of the pistol?

Let us consider,

$m_1$ be the mass of the bullet

$m_2$ be the mass of the pistol

$v_1$ be final velocity of the bullet

$v_2$ be final velocity of the pistol

$u$ be the initial velocities of the bullet and pistol before the collision

From the law of conservation of momentum, We know that,

Recoil velocity of the pistol

$=$

$m\ s^{-1}$ .

(Note: Enter the values up to one decimal digit)

$1$

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28. Intext example VI