Balanced and Unbalanced Forces

Front

What are Balanced Forces?

Back

Balanced forces are forces that are equal in size but opposite in direction. They do not cause a change in the motion of an object.

Front

What are Unbalanced Forces?

Back

Unbalanced forces are forces that are not equal in size or opposite in direction. They cause a change in the motion of an object.

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Example of Balanced Forces: Sitting in a chair.

Back

When you sit in a chair, the force of gravity pulling you down is balanced by the normal force from the chair pushing you up.

Front

Example of Unbalanced Forces: Kicking a football through a field goal.

Back

When you kick a football, the force of your kick is greater than the opposing forces, causing the ball to move.

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What happens when forces are balanced?

Back

When forces are balanced, the object remains at rest or continues to move at a constant speed in a straight line.

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What happens when forces are unbalanced?

Back

When forces are unbalanced, the object accelerates in the direction of the net force.

Front

Example of Unbalanced Forces: Skateboarding downhill.

Back

As you skateboard downhill, gravity pulls you down faster than friction can slow you down, resulting in acceleration.

Front

Example of Balanced Forces: A parked car.

Back

A parked car experiences balanced forces, with the force of gravity pulling it down and the ground pushing it up.

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What is the net force?

Back

The net force is the overall force acting on an object when all the individual forces are combined.

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How do you calculate net force?

Back

To calculate net force, add up all the forces acting in one direction and subtract the forces acting in the opposite direction.