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A performer in a circus is fired from a cannon as a human cannonball and leaves the cannon with a speed of 18.0 m/s. The

A performer in a circus is fired from a cannon as a "human cannonball" and leaves the cannon with a speed of 18.0 m/s. The performer's mass is 80.0 kg. The cannon barrel is 9.20 meters long. Find the average net force exerted on the performer while he is being accelerated inside the cannon.

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