waynexk8 said:NOTE Newtons first law does NOT seem to work here, at the object does NOT keep moving at a constant speed, it actually stops.
Am I missing somthing ?
Wayne
What exactly are you talking about?waynexk8 said:NOTE Newtons first law does NOT seem to work here, at the object does NOT keep moving at a constant speed, it actually stops.
waynexk8 said:NOTE Newtons first law does NOT seem to work here, at the object does NOT keep moving at a constant speed, it actually stops.
Am I missing somthing ?
Wayne
torquil said:Yes you are missing gravity. If I'm sitting on the space station and push some object towards earth, it will come back up again later on. If the space station has a circular orbit, the thrown object will have an elliptic orbit. Sometimes closer to earth, sometimes farther away. So it will move up and down relatively to me.
Torquil
waynexk8 said:K thx.
Ok, if the Moon can move the tides, and they must weigh Billions of tones, why does it not move far lighter things on this Earth and things like space walkers ?
Wayne
torquil said:The moon does influence the movement of space walkers.
Also, its gravitational field acts on every object on Earth the same. The difference between its influence on land and water is that land is rigid and water is not. The water is able to flow, and therefore the effect of the lunar influence is different.
Remember, the gravitational force between two objects is proportional to the product of the two masses, so the force acting on the billion of tonnes of water is proportionally larger.
Torquil
Matterwave said:The moon affects the tides by an uneven pull between the areas of the Earth closer to the moon and the areas of the Earth farther from the moon. An astronaut, being small, does not feel this difference in pull appreciably; he feels more or less the same force throughout his entire body.
Newton's Laws of Motion are three physical laws that describe the relationship between an object's motion and the forces acting upon it. These laws are based on classical mechanics and typically apply to macroscopic objects. However, they may not accurately describe motion at the atomic or subatomic level, where quantum mechanics principles are necessary.
One example of where Newton's Laws may not accurately describe motion is at the quantum level, specifically in the behavior of particles such as electrons. These particles exhibit wave-like properties and do not always follow the laws of classical mechanics.
Scientists use the principles of quantum mechanics to explain motion at the atomic and subatomic level. These principles take into account the wave-like nature of particles and the uncertainty of their position and velocity.
No, Newton's Laws are only applicable to certain types of motion. They are most accurate for objects moving at low speeds and on a macroscopic scale. In situations where there are extreme speeds or particles with wave-like properties, other principles and laws must be used.
Yes, Newton's Laws are still considered fundamental principles in the field of physics and are crucial for understanding motion in many everyday situations. While they may not accurately describe all types of motion, they provide a solid foundation for further developments in physics and continue to be a valuable tool for scientists and engineers.