Movement in Space: Understanding Acceleration & Force

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SUMMARY

The discussion centers on the principles of motion in space, specifically addressing Newton's First Law of Motion. It establishes that an object in space will continue to move indefinitely unless acted upon by an equal and opposite force, confirming that acceleration requires a force. The conversation clarifies that once an object reaches a constant velocity, such as 100 km/h, it will maintain that speed unless a force is applied to decelerate it. This highlights the fundamental relationship between force, acceleration, and motion in a vacuum.

PREREQUISITES
  • Understanding of Newton's First Law of Motion
  • Basic knowledge of acceleration and force
  • Familiarity with concepts of velocity and inertia
  • Mathematical skills to interpret basic physics equations
NEXT STEPS
  • Study Newton's Second Law of Motion for deeper insights into force and acceleration
  • Explore the concept of inertia and its implications in space travel
  • Learn about gravitational forces and their effects on motion in space
  • Investigate real-world applications of these principles in spacecraft navigation
USEFUL FOR

Students of physics, aerospace engineers, and anyone interested in the mechanics of motion in space will benefit from this discussion.

vanwykm
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Hi Guys.

I hope I’m posting this in the correct section within this forum.
Please excuse my question as i have no idea about any physics and my mathematical knowledge is limited.

Can someone tell me if my understanding in correct.

If an object in space moves, it will never stop unless this object comes in contact with an equal and opposite force?

and

If an object in space accelerates 98km 99km 100km and then stops whatever is accelerating it will in keep accelerating?
 
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1. "...in contact with an equal and opposite force" to what?
the object won't stop unless a there is a force that causes it to decelerate until it stops.

2. No, it will keep moving at a constant 100km/h.
Remember that acceleration involves work and energy, so nothing accelerates unless there is a force acting on it and exerting force on it.
 

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