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Newton's third law of motion Video Lecture - Class 11

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FAQs on Newton's third law of motion Video Lecture - Class 11

1. What is Newton's third law of motion?
Ans. Newton's third law of motion states that for every action, there is an equal and opposite reaction. This means that whenever an object exerts a force on another object, the second object exerts a force of equal magnitude but in the opposite direction on the first object.
2. How does Newton's third law of motion apply to everyday life?
Ans. Newton's third law of motion can be observed in various everyday situations. For example, when we walk, our feet push backward on the ground, and the ground pushes forward on our feet, propelling us forward. Similarly, when we swim, we push the water backward with our arms and legs, and in response, the water pushes us forward.
3. Can you give an example of Newton's third law of motion in sports?
Ans. A common example of Newton's third law of motion in sports is seen in the game of soccer. When a player kicks the ball, their foot exerts a force on the ball, causing it to accelerate forward. Simultaneously, the ball exerts an equal and opposite force on the player's foot, which is felt as a backward push or recoil.
4. How does Newton's third law of motion explain the motion of a rocket?
Ans. Newton's third law of motion plays a crucial role in the motion of a rocket. The rocket's engines expel high-speed gases backward, creating a force known as thrust. As per Newton's third law, for every action (expulsion of gases), there is an equal and opposite reaction. Therefore, the rocket experiences a force pushing it forward, propelling it into space.
5. Is Newton's third law of motion only applicable to objects in contact?
Ans. No, Newton's third law of motion is not limited to objects in contact. It applies to any interaction between two objects, whether they are in physical contact or not. For example, the gravitational force exerted by the Earth on a falling object and the reaction force exerted by the object on the Earth are an illustration of Newton's third law, even though they are not in direct contact with each other.
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