Why should a gun be held tightly against the shoulder, while firing?

While firing a bullet,the gun must be held tight to the shoulder. "In the firing process the speed of the gun is very low compared to the speed of the bullet." Substantiate the above statement using mathematical expressions.

While firing, a gun man has to hold the gun tightly against his shoulder. Why?

While firing the bullet,the gun must be held tight to the shoulder. This is a consequence of ___________.

While firing a bullet,the gun must be held tight to the shoulder. Which conservation law helps you to explain this.

While firing the bullet,the gun must be held tight to the shoulder. Show that recoil velocity is opposite to the muzzle velocity of the bullet.

Why it is advisable to hold a gun tight to one's shoulder when it is being fired?

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.