According To Newton's Third Law Of Motion, Which Are Equal?A. Momentum And Velocity B. Collision Time And Stop Time C. Mass And Momentum D. Action Force And Reaction Force

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Introduction

Newton's third law of motion is a fundamental concept in physics that describes the relationship between two objects interacting with each other. This law states that for every action, there is an equal and opposite reaction. In this article, we will explore the concept of Newton's third law of motion and identify which of the given options are equal.

Newton's Third Law of Motion

Newton's third law of motion is often referred to as the law of reciprocal actions. It states that when two objects interact with each other, they apply forces to one another that are equal in magnitude and opposite in direction. This law can be expressed mathematically as:

F1 = -F2

Where F1 is the force applied by object 1 to object 2, and F2 is the force applied by object 2 to object 1.

Examples of Newton's Third Law of Motion

There are many examples of Newton's third law of motion in everyday life. For instance, when you push on a wall, the wall pushes back on you with the same force. When you throw a ball, the ball exerts an equal and opposite force on your hand. These examples illustrate the concept of action and reaction forces.

Action Force and Reaction Force

Now, let's examine the options given in the question. The correct answer is D. Action force and reaction force. According to Newton's third law of motion, the action force and reaction force are equal and opposite. This means that the force applied by one object to another is equal in magnitude to the force applied by the second object to the first.

Why Momentum and Velocity are Not Equal

Option A, Momentum and velocity, is incorrect because momentum and velocity are not equal. Momentum is the product of an object's mass and velocity, while velocity is the rate of change of an object's position. Although momentum and velocity are related, they are not equal.

Why Collision Time and Stop Time are Not Equal

Option B, Collision time and stop time, is also incorrect because collision time and stop time are not equal. Collision time refers to the time it takes for two objects to collide, while stop time refers to the time it takes for an object to come to a complete stop. These two times are not equal and are dependent on various factors such as the mass and velocity of the objects involved.

Why Mass and Momentum are Not Equal

Option C, Mass and momentum, is incorrect because mass and momentum are not equal. Mass is a measure of an object's resistance to changes in its motion, while momentum is the product of an object's mass and velocity. Although mass and momentum are related, they are not equal.

Conclusion

In conclusion, Newton's third law of motion states that for every action, there is an equal and opposite reaction. The action force and reaction force are equal and opposite, and this law can be observed in various examples in everyday life. The correct answer to the question is D. Action force and reaction force.

Key Takeaways

  • Newton's third law of motion states that for every action, there is an equal and opposite reaction.
  • The action force and reaction force are equal and opposite.
  • Momentum and velocity are not equal.
  • Collision time and stop time are not equal.
  • Mass and momentum are not equal.

Frequently Asked Questions

  • What is Newton's third law of motion?
  • What is the relationship between action force and reaction force?
  • Why are momentum and velocity not equal?
  • Why are collision time and stop time not equal?
  • Why are mass and momentum not equal?

References

  • Newton, I. (1687). Philosophiæ Naturalis Principia Mathematica.
  • Halliday, D., Resnick, R., & Walker, J. (2013). Fundamentals of Physics.
  • Serway, R. A., & Jewett, J. W. (2018). Physics for Scientists and Engineers.

Glossary

  • Action force: The force applied by one object to another.
  • Reaction force: The force applied by the second object to the first.
  • Momentum: The product of an object's mass and velocity.
  • Velocity: The rate of change of an object's position.
  • Collision time: The time it takes for two objects to collide.
  • Stop time: The time it takes for an object to come to a complete stop.
    Newton's Third Law of Motion: Frequently Asked Questions =====================================================

Q: What is Newton's third law of motion?

A: Newton's third law of motion is a fundamental concept in physics that describes the relationship between two objects interacting with each other. It states that for every action, there is an equal and opposite reaction.

Q: What is the relationship between action force and reaction force?

A: The action force and reaction force are equal and opposite. This means that the force applied by one object to another is equal in magnitude to the force applied by the second object to the first.

Q: Why are momentum and velocity not equal?

A: Momentum and velocity are not equal because momentum is the product of an object's mass and velocity, while velocity is the rate of change of an object's position. Although momentum and velocity are related, they are not equal.

Q: Why are collision time and stop time not equal?

A: Collision time and stop time are not equal because collision time refers to the time it takes for two objects to collide, while stop time refers to the time it takes for an object to come to a complete stop. These two times are not equal and are dependent on various factors such as the mass and velocity of the objects involved.

Q: Why are mass and momentum not equal?

A: Mass and momentum are not equal because mass is a measure of an object's resistance to changes in its motion, while momentum is the product of an object's mass and velocity. Although mass and momentum are related, they are not equal.

Q: Can you give an example of Newton's third law of motion?

A: Yes, a classic example of Newton's third law of motion is when you push on a wall. The wall pushes back on you with the same force, illustrating the concept of action and reaction forces.

Q: How does Newton's third law of motion apply to real-world situations?

A: Newton's third law of motion applies to many real-world situations, such as:

  • When you throw a ball, the ball exerts an equal and opposite force on your hand.
  • When you drive a car, the car exerts an equal and opposite force on the road.
  • When you walk, your feet exert an equal and opposite force on the ground.

Q: What are some common misconceptions about Newton's third law of motion?

A: Some common misconceptions about Newton's third law of motion include:

  • Thinking that the action force and reaction force are always equal in magnitude, but not always opposite in direction.
  • Thinking that the action force and reaction force are always simultaneous, but not always.
  • Thinking that the action force and reaction force are always equal in magnitude and opposite in direction, but not always.

Q: How can I apply Newton's third law of motion in my everyday life?

A: You can apply Newton's third law of motion in your everyday life by:

  • Being aware of the forces that are acting on you and the objects around you.
  • Understanding how the action force and reaction force are related.
  • Using the concept of action and reaction forces to solve problems and make decisions.

Q: What are some advanced topics related to Newton's third law of motion?

A: Some advanced topics related to Newton's third law of motion include:

  • The concept of torque and rotational motion.
  • The concept of angular momentum and rotational motion.
  • The concept of relativistic motion and the behavior of objects at high speeds.

Q: What are some resources for learning more about Newton's third law of motion?

A: Some resources for learning more about Newton's third law of motion include:

  • Textbooks on physics and mechanics.
  • Online courses and tutorials on physics and mechanics.
  • Scientific articles and research papers on physics and mechanics.
  • Online forums and communities for discussing physics and mechanics.

Conclusion

Newton's third law of motion is a fundamental concept in physics that describes the relationship between two objects interacting with each other. It states that for every action, there is an equal and opposite reaction. By understanding the concept of action and reaction forces, you can apply Newton's third law of motion in your everyday life and solve problems and make decisions.