What is the physics of motion through space?

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Thread starter Netspirit
Start date Dec 11, 2017
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Motion Physics Space

In summary, the conversation discusses the concept of motion and its relationship with the metric expansion of the Universe. The idea of motion as a geometric or energetic process is explored, and questions are raised about the micro-physics of motion through space and the limitations of the speed of light. The speaker argues that the theory of motion is unnecessary and that matter simply moves without any need for explanation. However, the concept of relative velocity and the lack of absolute motion in relativity are also discussed. Ultimately, the conversation highlights the complexity of understanding motion and its various forms in the context of the expanding Universe.

Dec 16, 2017

Mister T

Science Advisor

Gold Member

Netspirit said:

For example, it feels non-intuitive how photons, traveling at the speed of light, allegedly "experience zero time" and, from their perspective, "instantly" connect the emitter (cause) with the absorber (effect) - as if both were directly adjacent on some deeper dimension (unlike their observer-specific spacetime "projections")

If you look at the definition of proper time, you see that the notion of proper time doesn't exist for a particle moving at speed ##c##. That is not the same thing as saying the proper time is zero. Although a phrase like "there is no time experienced" doesn't make that distinction clear (if at all) and is therefore open to misinterpretation. Some authors seem to propagate that misunderstanding, either on purpose or because they are unaware of the distinction.

<h2>1. What is the definition of motion through space?</h2><p>The physics of motion through space is the study of how objects move in three-dimensional space. It involves concepts such as velocity, acceleration, and position, and how these change over time. This branch of physics is also known as kinematics.</p><h2>2. What are the laws of motion through space?</h2><p>The laws of motion through space were first described by Sir Isaac Newton in his famous work, "Philosophiæ Naturalis Principia Mathematica." These laws state that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force, and that the force applied to an object is directly proportional to its mass and acceleration.</p><h2>3. How is motion through space related to gravity?</h2><p>Gravity plays a crucial role in the physics of motion through space. According to Newton's law of universal gravitation, every object in the universe attracts every other object with a force that is directly proportional to their masses and inversely proportional to the square of the distance between them. This means that gravity affects the motion of objects through space, causing them to accelerate towards each other.</p><h2>4. What are some real-life examples of motion through space?</h2><p>There are many real-life examples of motion through space, such as the motion of a ball being thrown, the orbit of planets around the sun, and the flight of a bird. Other examples include the motion of cars, airplanes, and rockets, as well as the movement of objects in a rollercoaster or on a swing.</p><h2>5. How is the physics of motion through space used in everyday life?</h2><p>The physics of motion through space is used in many everyday applications, such as transportation, sports, and technology. For example, understanding the principles of motion through space is essential for designing efficient and safe modes of transportation, such as cars, trains, and airplanes. It is also crucial in sports, where athletes must use their knowledge of motion to achieve maximum speed and distance. Additionally, the principles of motion through space are used in the design and operation of various technologies, such as satellites, GPS systems, and amusement park rides.</p>

Related to What is the physics of motion through space?

1. What is the definition of motion through space?

The physics of motion through space is the study of how objects move in three-dimensional space. It involves concepts such as velocity, acceleration, and position, and how these change over time. This branch of physics is also known as kinematics.

2. What are the laws of motion through space?

The laws of motion through space were first described by Sir Isaac Newton in his famous work, "Philosophiæ Naturalis Principia Mathematica." These laws state that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force, and that the force applied to an object is directly proportional to its mass and acceleration.

3. How is motion through space related to gravity?

Gravity plays a crucial role in the physics of motion through space. According to Newton's law of universal gravitation, every object in the universe attracts every other object with a force that is directly proportional to their masses and inversely proportional to the square of the distance between them. This means that gravity affects the motion of objects through space, causing them to accelerate towards each other.

4. What are some real-life examples of motion through space?

There are many real-life examples of motion through space, such as the motion of a ball being thrown, the orbit of planets around the sun, and the flight of a bird. Other examples include the motion of cars, airplanes, and rockets, as well as the movement of objects in a rollercoaster or on a swing.

5. How is the physics of motion through space used in everyday life?

The physics of motion through space is used in many everyday applications, such as transportation, sports, and technology. For example, understanding the principles of motion through space is essential for designing efficient and safe modes of transportation, such as cars, trains, and airplanes. It is also crucial in sports, where athletes must use their knowledge of motion to achieve maximum speed and distance. Additionally, the principles of motion through space are used in the design and operation of various technologies, such as satellites, GPS systems, and amusement park rides.