Acceleration perpendicular to an inclined plane

[Jacob87411]

This is more a general case question than a specific problem. Say you have a box on an inclined plane and you break the forces into the components, sum the forces in Y and X. If you keep your X and Y axis' the way they usually are (don't make the X axis along the inclined plane) and the box is sliding up or down the plane is your acceleration in the Y 0, thus making the sum of your forces in the Y direction 0? Thanks

 

[Hootenanny]

This is more a general case question than a specific problem. Say you have a box on an inclined plane and you break the forces into the components, sum the forces in Y and X. If you keep your X and Y axis' the way they usually are (don't make the X axis along the inclined plane) and the box is sliding up or down the plane is your acceleration in the Y 0, thus making the sum of your forces in the Y direction 0? Thanks

That depends whether your moving at a constant velocity or not