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The force of an explosion on the piston of a gasoline engine is due to the change of momentum of the gas particles. What must be the speed of the molecules of gas after the explosion if 0.6 g of gas exerts a force of 1400 N on the piston, in an explosion that lasts 0.001 s? Assume that all the gas molecules have the same velocity after the explosion and that they are heading directly at the piston.

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