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  1. Balanced and unbalanced forces (video) | Khan Academy

    When forces in a particular dimension cancel each other out, they're balanced and result in zero net force. When forces in a particular dimension do not cancel each other out, they're unbalanced and …

  2. Balanced & unbalanced forces (video) | Khan Academy

    Balanced forces: When you push a book on a table with a force of 5 N to the right and friction pushes with 5 N to the left, the forces are balanced. The book stays still or moves at a constant speed.

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  4. Newton's second law review (article) | Khan Academy

    equilibrium is when there is a net force of zero, so the forces acting upon the object equal zero but the velocity is still constant and non-zero. If velocity were zero then it would be static equilibrium.

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  6. Balanced and unbalanced forces (practice) | Khan Academy

    A birthday present is placed on a table as shown in the figure. The present is at rest. In which direction should an extra force be applied so that the box stays at rest.

  7. Unbalanced forces and motion (video) | Khan Academy

    There is a point where the force of gravity and the force of air resistance are equal, the forces are balanced. With these forces balanced the ball keeps falling but it no longer is accelerating.

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  9. Newton's third law review (article) | Khan Academy

    Newton’s third law of motion says whenever one body exerts a force on a second body, the second body exerts a force that is equal in magnitude and opposite in direction on the first body.

  10. Friction (article) | Dynamics - Khan Academy

    If two surfaces are sliding (or something is attempting to make them slide) relative to each other, then the interatomic electric forces will also result in a macroscopic force component that's parallel to the …