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Course

Explain – Working of Third Law of Motion

How does it work?
Newton’s third law explains how balloons and rocket engines work. When the neck of an inflated balloon is released, the stretched rubber material pushes against the air in the balloon. The air rushes out of the neck of the balloon. This is because the air inside the balloon is under high pressure (high-pressure area) and it wants to move outside (low-pressure area). The action of the air rushing from the balloon pushes against the balloon, moving it in the opposite direction.
When rocket fuel is burned, hot gases are produced. These gases expand rapidly and are forced out of the back of the rocket. This is the action force. The gases exert an equal and opposite force on the rocket itself. This is the reaction force. This force pushes the rock upward. Remember, action and reaction forces always work in the direction opposite to each other!

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