Identify the action-reaction forces in the following cases.
i) A boy walking on the ground
ii) Firing a bullet from the gun
iii) A boy swimming in a swimming pool
iv) Launching of a rocket from the earth surface
Answers
Answer:
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Explanation:
i. boy moving forward , earth displaces backwards
iii. boy swimming forward , water gets displaced
iv. rocket rising upward , gases and fuels gets back downward
Answer:
Explanation:
Newton's Third Law of motion:
According to the Newton's third law of motion, every action has a corresponding and opposing response.
A boy walking on the ground:
forcefully pushing the ground backward Reaction: Pushing forward with the force of the ground
A boy travelling on the ground pushes the ground backward with his feet, and the ground pushes his feet forward with an equal power, propelling him forward. Therefore, the force pushing the earth backward is the action, and the force pushing the ground under our feet forward is the reaction.
Firing a bullet from the gun:
Action: The bullet was subjected to force.
A force was applied to the gun in response.
A boy swimming in a swimming pool:
When swimming, a person uses his hands and feet to exert action force, pushing the water backward. The third law of Newton states that the water pushes the person forward (reaction force) with an equal and opposite force.
Launching of a rocket from the earth surface:
Newton's Third Law of Motion is used in rocket launch operations. Action and reaction work together to create thrust in a rocket engine. Hot exhaust gases are produced by the engine and exit out the back. The opposite reaction produces a propelling force in response.
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