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What is net force? Balanced forces Unbalanced forces How do we combine opposite forces?

What is net force?
Balanced forces
Unbalanced forces
How do we combine opposite forces?
Scenario A: 16 N right + 10 N right = ______ N (direction: ______)
Scenario B: 20 N right - 10 N left = ______ N (direction: ______)
If both boxes have the SAME mass, which net force creates the larger acceleration?

Answer

What is net force? The net force is the sum of all forces acting on an object, taking direction into account.

Balanced forces When net force = 0 N, an object at rest stays at rest, and an object already moving continues at constant speed and direction.

Unbalanced forces A net force that is not zero causes a change in velocity (speed and/or direction). The acceleration points in the direction of the net force.

How do we combine opposite forces? Choose a positive direction. Add all force values using signs to show directions.

  1. Scenario A: 16 N right + 10 N right = 26 N (direction: right)
  2. Scenario B: 20 N right - 10 N left = 10 N (direction: right)

If both boxes have the SAME mass, which net force creates the larger acceleration? Scenario A creates the larger acceleration because it has a larger net force of 26 N.

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