Velocity and Acceleration understanding

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Homework Help Overview

The discussion revolves around the relationship between velocity and acceleration, particularly in scenarios where velocity is zero. Participants are exploring concepts from kinematics and Newtonian physics.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster questions whether acceleration can be zero when velocity is zero, noting conflicting opinions from different sources. Some participants discuss scenarios involving deceleration and the conditions under which acceleration remains non-zero despite zero velocity.

Discussion Status

Participants are actively engaging with the concepts, providing insights and perspectives on the relationship between velocity and acceleration. There is a recognition of differing interpretations, particularly regarding the conditions under which acceleration can be zero.

Contextual Notes

Some participants reference Newton's laws to support their reasoning, indicating a focus on foundational physics principles. The discussion reflects varying interpretations of the definitions and implications of velocity and acceleration.

mrserv0n
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If somethings velocity is 0 can the acceleration be 0? If so why?

I have been trying to answer this and it seems I come up with different opinons from the text to the internet.

Which is it??
 
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A body is deccelerating, then its velocity starts tending to zero. Agreed. Then after sometime the velocit would reach zero, I mean the instantaneous velocity, But the decceleration might continue and hence the instantaneous acceleration is not 0.
 
However, if a body is at rest (v=0) and no external force is acting, then by Newton's first and second laws the acceleration must also be zero (f=ma). Therefore, yes it is possible but only if the body is at rest.
 
Thanks for the insight my fellow physics friends.
 

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