Balanced and Unbalanced Forces

Front

What is the sum of all forces acting on an object?

Back

Net Force

Front

What is the net force when two equal forces act in opposite directions?

Back

0N

Front

What prevents a book from falling through a table when gravity pulls it down?

Back

The table presses back up on the book with an equal and opposite force of 20 newtons.

Front

What is the force that opposes the motion of two surfaces sliding past each other?

Back

Friction

Front

What is true when the net force acting on an object is zero?

Back

The forces are balanced.

Front

What is an unbalanced force?

Back

A force that causes an object to accelerate.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What happens to an object when the net force acting on it is not zero?

Back

It accelerates in the direction of the net force.

Front

What is a contact force?

Back

A force that acts at the point of contact between two objects.

Front

What is an example of balanced forces?

Back

Two people pushing a car with equal force in opposite directions.