Balanced & Unbalanced Forces Review

Front

What are balanced forces?

Back

Balanced forces are two or more forces acting on an object that are equal in size but opposite in direction, resulting in a net force of zero.

Front

What are unbalanced forces?

Back

Unbalanced forces occur when two or more forces acting on an object are not equal, causing the object to accelerate in the direction of the greater force.

Front

What is net force?

Back

Net force is the overall force acting on an object after all the individual forces are combined.

Front

What is the unit of force?

Back

The unit of force is called a Newton (N).

Front

If two people pull on a rope in opposite directions with equal force, what happens?

Back

The rope does not move because the forces are balanced.

Front

What happens to an object when unbalanced forces act on it?

Back

The object will accelerate in the direction of the net force.

Front

Give an example of balanced forces.

Back

A book resting on a table is an example of balanced forces; the force of gravity pulling it down is balanced by the normal force from the table pushing it up.

Front

Give an example of unbalanced forces.

Back

A soccer ball being kicked is an example of unbalanced forces; the force of the kick is greater than the opposing forces.

Front

What is the effect of balanced forces on an object's motion?

Back

Balanced forces do not change an object's motion; the object remains at rest or continues to move at a constant speed.

Front

What is the effect of unbalanced forces on an object's motion?

Back

Unbalanced forces cause an object to start moving, stop moving, or change direction.