A 40-g bullet leaves the muzzle of a gun at a speed of 300, Ask an Expert

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Q. A 40-g bullet leaves the muzzle of a gun at a speed of 300 m/s. If the barrel of the gun is 12 cm long, what is the force acting on the bullet while it is in the barrel?

Q. A 0.29 kg meter stick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 9.50 cm toward that end. What is the mass of the necklace?

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Category:- Physics
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