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- 1 decade agoFavorite Answer
Water Rocket is a pressure water rocket-propelled model.
Rockets running water or less the same principle with the Rockets. Launch water rockets before the need to pump it full of water inside, water rocket with too much pressure from outside when the water jet. According to Newton's third law of movement, when the water rocket exhaust water, will have the same size, the direction of the opposite reaction, this force will push the rocket upward movement of water.Source(s): me