What is Newton's Third Law of Motion?

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction.

Why do rockets need to expel gas?

Rockets expel gas downward to generate thrust, which in turn gives an upward force to the rocket.

How does Newton's Third Law apply to jumping?

When you jump, you push down on the ground, and the ground pushes you upward with an equal and opposite force.

What happens if you use less force while jumping or swimming?

Using less force results in a lower jump or slower swim, because the reaction force is smaller.

Action and Reaction: Newton’s Third Law (updated)

00:02:14

https://www.youtube.com/watch?v=mO1qtmFee-k

概要

TLDRThe video explores Newton's Third Law of Motion, commonly known as the Law of Action and Reaction. It explains that for every action, there is an equal and opposite reaction, illustrated through examples such as rockets and jumping. Rockets expel gases to generate thrust by exerting a force downward, causing an equal upward force that propels them into space. Similarly, when a person jumps, they exert force on the ground, which in turn pushes them upward. This principle is also evident in swimming, where pushing water with more force propels you faster across a pool. The video's tutorial invites viewers to explore Newton's other laws as well.

収穫

🚀 Rockets need downward force to go up due to Newton's Third Law.
🔄 Every force has an equal and opposite reaction.
💪 More force results in higher jumps and faster swims.
🌊 Swimming faster requires pushing water harder.
🧠 Understanding physics principles helps explain everyday phenomena.

タイムライン

00:00:00 - 00:02:14
Newton's third law of motion, often referred to as the Law of action and reaction, states that for every action, there is an equal and opposite reaction. When an object exerts a force on another object, the second object exerts an equal and opposite force back. This principle is demonstrated in various scenarios, such as rockets needing to overcome Earth's gravity by expelling gas downwards, which in turn pushes the rocket upwards. Another example is seen in jumping, where the force exerted by Joan's legs on the ground results in an equal force pushing her up. The same concept applies in swimming, where the effort put into pushing water dictates the swimmer’s speed and distance traveled. Examples like these illustrate how Newton's third law operates in everyday life.

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よくある質問

What is Newton's Third Law of Motion?
Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction.
Why do rockets need to expel gas?
Rockets expel gas downward to generate thrust, which in turn gives an upward force to the rocket.
How does Newton's Third Law apply to jumping?
When you jump, you push down on the ground, and the ground pushes you upward with an equal and opposite force.
What happens if you use less force while jumping or swimming?
Using less force results in a lower jump or slower swim, because the reaction force is smaller.