When dividing the mass of a 10 gram bullet by a 7 kg rifle, will the rate of fire be obtained?

No, it won’t work. The speed of the bullet firing depends on the mass of the powder charge of the cartridge, the work that the gaseous mixture will perform, pushing the bullet out of the rifle, the temperature of this gas mixture, the mass of the bullet itself and the length of the rifle barrel and does not depend on the mass of the rifle.

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