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

Front

What happens when balanced forces act on an object?

Back

When balanced forces act on an object, it will not move or will continue to move at a constant speed.

Front

What happens when unbalanced forces act on an object?

Back

When unbalanced forces act on an object, it will accelerate, meaning it will speed up, slow down, or change direction.

Front

Can you give an example of balanced forces?

Back

An example of balanced forces is a book resting on a table. The weight of the book pulls down, and the table pushes up with equal force.

Front

Can you give an example of unbalanced forces?

Back

An example of unbalanced forces is when a person pushes a swing. The push causes the swing to move.

Front

What will happen if two people pull on a rope with the same force?

Back

If two people pull on a rope with the same force, the rope will not move at all.

Front

What is the effect of unbalanced forces on a stationary object?

Back

Unbalanced forces on a stationary object will cause it to start moving.

Front

What is the effect of unbalanced forces on a moving object?

Back

Unbalanced forces on a moving object will cause it to change its speed or direction.

Front

What is an example of balanced forces in sports?

Back

An example of balanced forces in sports is when two teams pull on a tug-of-war rope with equal strength.