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(9-7) A rocket of total mass 3180 kg is traveling in outer space with a velocity of 115 m/s. To alte
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(9-7) A rocket of total mass 3180 kg is traveling in outer space with a velocity of 115 m/s. To alter its course by 35.0°, its rockets can be fired briefly in a direction perpendicular to its original motion. If the rocket gases are expelled at a speed of 1750 m/s, how much mass must be expelled?
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