why is it told that the launching of rockets is an example of newton's third law of motion when the two forces are actually unequal or else the rocket would not have the velocity??
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The third law states that for every action (force) in nature there is an equal and opposite re-action. In other words, if object A exerts a force on object B, then object B also exerts an equal force on object A. Notice that the forces are exerted on different objects. The third law can be used to explain the generation of thrust by a rocket engine.
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In a rocket engine, hot exhaust gas
is produced through the
combustion of a fuel with an oxidizer.
The hot exhaust gas are forced out at one end of the rocket. In re-action, the main rocket moves in the opposite direction. It is important to note that action and reaction act on different bodies.
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