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Relative Position

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A shell Leaves the Barrel Of the gun at a Speed Of 500m/s. The Barrel is 2.0 m long. The Average Acceleration of the shell is

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A shell acquires the initial velocity $v$ = 320 m/s, having made $n$ = 2.0 turns inside the barrel whose length is equal to $l$ = 2.0 m. Assuming that the shell moves inside the barrel with a uniform acceleration, find the angular velocity of its axial rotation at the moment when the shell escapes the barrel.

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