Grade 9 Exam > Grade 9 Videos > Physics for Grade 9 > Third Law of Motion
Third Law of Motion Video Lecture | Physics for Grade 9
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FAQs on Third Law of Motion Video Lecture - Physics for Grade 9
| 1. What is the Third Law of Motion? |  |
Ans. The Third Law of Motion, also known as Newton's Third Law, 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. Can you provide an example of the Third Law of Motion? | |
Ans. Sure! A common example of the Third Law of Motion is when you are standing on the ground. When you stand, you exert a downward force on the ground. Simultaneously, the ground exerts an equal and opposite force upward, preventing you from sinking into the ground.
| 3. How does the Third Law of Motion relate to everyday life? | |
Ans. The Third Law of Motion is applicable in various aspects of everyday life. For example, when you swim, you push the water backward with your arms and legs. As a result, the water exerts an equal and opposite force, propelling you forward. Similarly, when you walk, the ground exerts a reaction force on your feet, allowing you to move forward.
| 4. Does the Third Law of Motion apply to all types of forces? | |
Ans. Yes, the Third Law of Motion applies to all types of forces. It states that the forces always occur in pairs and are equal in magnitude but opposite in direction. Whether it's a contact force, such as pushing a wall, or a non-contact force, such as the gravitational force between two objects, the Third Law holds true.
| 5. How does the Third Law of Motion explain the motion of a rocket? | |
Ans. The Third Law of Motion explains the motion of a rocket. As the rocket propels exhaust gases backward by burning fuel, it experiences an equal and opposite force pushing it forward. This force, known as the reaction force, propels the rocket into the sky. The greater the force exerted by the exhaust gases, the faster the rocket accelerates.
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Nov 23, 2024 Last updated |
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