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While firing the bullet,the gun must be ...

While firing the bullet,the gun must be held tight to the shoulder.
A gun of mass `5kg` fire a bullet of mass `5g` vertically upwards to a height of `100m`.Calculate the recoil velocity of gun.

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MAXIMUM PUBLICATION-LAWS OF MOTION-EXERCISE
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  2. While firing the bullet,the gun must be held tight to the shoulder. ...

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