General question about accleration of box on inclined plane

  • Thread starter hager
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Homework Statement


Is it possible for a box going down on a frictionless incline plane to have not a negative accleration but positive accleration? Please help, it is confusing.


Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
berkeman
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Homework Statement


Is it possible for a box going down on a frictionless incline plane to have not a negative accleration but positive accleration? Please help, it is confusing.


Homework Equations





The Attempt at a Solution


Acceleration is a vector quantity. So the sign of the vector depends on how you choose your coordinate system. If an object is free-falling at the surface of the Earth, then the acceleration due to gravity "g" is positive if the Z axis points down, and negative if it points up. As long as you keep your coordinate system consistent, you could choose either way.
 

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