Antiaircraft gun force physics problem

AI Thread Summary
To determine the propulsive force necessary for the 12.8 cm Flak 40 antiaircraft gun to achieve a muzzle speed of 910 m/s, the acceleration of the shell must first be calculated. Using the formula F=ma, the mass of the shell (24.4 kg) will be multiplied by its acceleration. The acceleration can be found by applying kinematic equations, considering the initial speed, final speed, and the distance of 6.00 m over which the shell accelerates. The discussion emphasizes the need to revisit fundamental kinematics to solve for acceleration before calculating the force. Understanding these principles is crucial for solving the physics problem accurately.
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Homework Statement



The largest-caliber antiaircraft gun operated by the German air force during World War II was the 12.8 cm Flak 40. Suppose this weapon fired a 24.4 kg shell with a muzzle speed of 910 m/s. What propulsive force was necessary to attain the muzzle speed within the 6.00 m barrel? (Assume the shell moves horizontally with constant acceleration and neglect friction.)

Homework Equations



F=ma

The Attempt at a Solution



I know the force will be obtained by multiplying 24.4 by acceleration, however i can't determine acceleration.
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What do you know about the motion of the bullet? Initial/Final Speeds? Over what distance is it accelerating? HINT: Go back to kinematics.
 
Look at your constant acceleration equations

Chris
 

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