Topic related to Forces and Newton's laws

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SUMMARY

The discussion centers on Newton's First Law of Motion, specifically addressing the behavior of a kicked ball in different environments. When a ball is kicked on Earth, it eventually stops due to forces such as air resistance and gravity. In contrast, in a vacuum, the ball continues to move indefinitely after being kicked, as there are no opposing forces. The consensus is that the force exerted by the kick ceases the moment contact with the ball is lost, leading to constant velocity thereafter.

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  • Understanding of Newton's Laws of Motion
  • Basic knowledge of forces such as gravity and air resistance
  • Familiarity with concepts of acceleration and velocity
  • Knowledge of motion in different environments (e.g., Earth vs. space)
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  • Explore the concept of inertia and its implications in motion
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ehabmozart
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I wanted to ask from my intuition of Newton's First law that body in motion remains in motion. Assume we kick a ball on earth, we does our force of kicking stops. I mean ultimately it comes to a stop due to resistance and gravity. Now, assume it is in space with no gravity or air. When we kick it, it will move forever but it must've been moving with some acceleration at the beginning b4 moving with const. velocity. When does our force of kicking actually stop. Is it the instant we lose contact with the ball? Thanks for anyone who contributes! :)
 
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What do you think? Can it stop after we lose contact?
No.
So, it's either at that exact moment, or before.
 

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