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In: Physics

A 1450 kg cannon, which fires a 80 kg shell with a speed of 526 m/s...

A 1450 kg cannon, which fires a 80 kg shell with a speed of 526 m/s relative to the muzzle, is set at an elevation angle of 39° above the horizontal. The cannon is mounted on frictionless rails, so that it recoils freely. What is the speed of the shell with respect to the Earth? At what angle with the ground is the shell projected?

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