Calculating Force of Friction on 8.1g Bullet in Rifle Barrel

AI Thread Summary
To calculate the constant force exerted on an 8.1g bullet traveling at 605.8 m/s down a 0.5m rifle barrel, start by identifying the knowns: mass of the bullet, barrel length, and exit speed. The unknown is the force of friction. A suitable method to solve this problem is using kinematics, as it allows for the calculation of acceleration and subsequently the force. Key equations include Newton's second law (F = ma) and kinematic equations relating distance, initial velocity, final velocity, and acceleration. After manipulating these equations, verify the solution to ensure it falls within a reasonable range.
zolloz89
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please help me FRICTION

A 8.1g bullet leaves the muzzle of a rifle with a speed of 605.8m/s. What constant force is exerted on the bullet while it is traveling down the0.5m lengthof the barrel of the rifle? answer in N.

Thanks in advance!
 
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sry for the double post
i forgot to say that i am completely lost and have no idea where to start
 
Here is what you will do:

A. Write down what the question is asking

B. Write down what are the knowns

C. Write down what are the unknowns

D. Write down which method you will try to use to solve this (Energy, kinematic?, and why)

E. Write down the equations you have based on the method chosen from part D.

F. Try to manipulate the equations to get a solution

G. Check your solution to see if it seems too big or small to be reasonable


THEN, someone will help you.
 
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