The working of a rocket is based on the principle of: (1) Conservation of momentum (2) Conservation of mass (3) Conservation of energy (4) Conservation of angular momentum

The working of a rocket is based on the principle of: (1) Conservation of momentum (2) Conservation of mass (3) Conservation of energy (4) Conservation of angular momentum
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(1) Conservation of momentum Explanation: The operation of a rocket illustrates the conservation of momentum. Just before launching, the momentum of the rocket is zero. When the rocket is fired, it forces a jet of hot gases with a high velocity through the nozzle. The jet of gases acquires a momentum downwards. Hence, the rocket acquires a momentum of equal magnitude in opposite direction. Thus the rocket moves upwards.
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