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Vectors - velocity is changing but speed is not

  • Thread starter kenji1992
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  • #1
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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.
 

Answers and Replies

  • #2
NascentOxygen
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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.
 
  • #3
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#C, D, E can't be correct then by that logic... I hope I'm interpreting that correctly.
 
  • #4
haruspex
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#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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