Describe the conservation of linear momentum in a rocket propulsion system.
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In a rocket propulsion system, conservation of linear momentum is observed. As the rocket expels gas at high velocity in one direction (exhaust), an equal and opposite momentum is gained by the rocket in the opposite direction. This causes the rocket to move forward. By Newton’s third law, the force exerted by the exhaust gas on the rocket is balanced by an equal and opposite force exerted by the rocket on the gas, ensuring conservation of momentum.