What is the true nature of rest according to Newton's first law?

Click For Summary
SUMMARY

The discussion centers on the interpretation of "rest" in the context of Newton's First Law of Motion. Participants clarify that a body is considered at rest when it has zero velocity relative to an observer, regardless of the presence of net forces acting on it. The consensus is that rest does not imply the absence of forces, as a body can be momentarily at rest while experiencing acceleration, such as at the peak of a vertical throw. The conversation also touches on the concept of inertial frames and the applicability of Newton's laws in non-inertial contexts.

PREREQUISITES
  • Understanding of Newton's First Law of Motion
  • Familiarity with concepts of velocity and acceleration
  • Knowledge of inertial and non-inertial reference frames
  • Basic principles of classical mechanics
NEXT STEPS
  • Explore the implications of Newton's laws in non-inertial frames
  • Study the concept of fictitious forces and their applications
  • Learn about the equivalence principle in physics
  • Investigate the relationship between velocity, acceleration, and forces in classical mechanics
USEFUL FOR

Students of physics, educators teaching classical mechanics, and anyone interested in the foundational concepts of motion and forces.

  • #31
TurtleMeister said:
So does that mean it's impossible to prove?
Any scientific theory is impossible to prove (prove correct that is). On the other hand, all it takes is one stinking experiment to prove it false.

That's the rub: Newton's laws have been proven to be false.
 

Similar threads

  • · Replies 41 ·
2
Replies
41
Views
2K
  • · Replies 16 ·
Replies
16
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 5 ·
Replies
5
Views
27K
  • · Replies 19 ·
Replies
19
Views
4K