Vectors - velocity is changing but speed is not

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Homework Help Overview

The discussion revolves around identifying a pair of vectors that represent an object with changing velocity but constant speed. The context is within the study of vectors in physics.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to determine which pairs of vectors can represent the described scenario. There is a focus on the relationship between velocity and acceleration, with some questioning how acceleration affects speed.

Discussion Status

The discussion is ongoing, with participants exploring different vector pairs and their implications. Some have expressed uncertainty about the correctness of certain options based on their interpretations of the relationships between velocity and acceleration.

Contextual Notes

Participants are considering the implications of acceleration on speed and are questioning the assumptions behind their interpretations of the vector pairs.

kenji1992
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Vectors -- velocity is changing but speed is not...

Homework Statement


Which pair of vectors represent an object whose velocity is changing but whose speed is NOT changing?
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Homework Equations





The Attempt at a Solution



E? V is going left, indicating negative, while acceleration goes in the other direction.
 
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E? V is going left, indicating negative, while acceleration goes in the other direction.
But that acceleration is going to change the speed. It will, initially, decrease the speed. E is not correct.
 
#C, D, E can't be correct then by that logic... I hope I'm interpreting that correctly.
 
kenji1992 said:
#C, D, E can't be correct then by that logic... I hope I'm interpreting that correctly.
Right... and one more - which?
 

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