Newton's Second Law Explained - Learn the Basics

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SUMMARY

Newton's Second Law is fundamentally about the relationship between force, mass, and acceleration. In the discussed scenario, resistive forces and gravitational forces both play critical roles in determining an object's motion along the x-axis. If only a resistive force proportional to the square of velocity is considered, an object at rest will not move unless an initial velocity (v0) is applied. The discussion emphasizes the importance of including all relevant forces to avoid trivializing the problem.

PREREQUISITES
  • Understanding of Newton's Laws of Motion
  • Basic knowledge of forces and motion
  • Familiarity with concepts of velocity and acceleration
  • Ability to analyze motion in a coordinate system
NEXT STEPS
  • Study the implications of resistive forces in physics
  • Explore gravitational force calculations in different frames of reference
  • Learn about the mathematical formulation of Newton's Second Law
  • Investigate the effects of initial conditions on motion dynamics
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone interested in understanding the fundamental principles of motion and force interactions.

don_anon25
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Question answered! Thanks for the input!
 
Last edited:
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That resistive force is not the only force acting on the object (otherwise it'll just sit there). Don't forget gravity.
 
It moves along the x-axis...I forgot to mention that. So gravity is not taken into consideration?
 
If the object is initially at rest in a frame where the only force acting is proportional to velocity squared, then yes, it is obvious that the particle won't do anything. Somehow, I suspect that the question wan't meant to be that trivial.
 
I think that velocity to be v0, not zero. Otherwise, the problem is trivial. I just wanted to check and make sure I wasn't missing anything :smile:
 
Last edited:

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