Describe balanced and unbalanced forces - Middle School Physical Science

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Question

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Which of these forces are unbalanced?

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Answer

The answer is "left and right." These forces are not balanced because while they are going in opposite directions, they are not equal.

Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.

The force of gravity is what holds us down on Earth. The normal force pushes back up against objects in the opposite direction of gravity and keeps things from getting crushed. These are balanced forces.

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