Calculating Net Force & Newton's 3rd Law

Front

What is the net force?

Back

The net force is the overall force acting on an object when all the individual forces are combined. It determines the object's motion.

Front

What does Newton's 3rd Law of Motion state?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What causes a change in motion?

Back

A change in motion is caused by unbalanced forces.

Front

If two forces of 10 N to the right and 20 N to the left are acting on an object, what is the net force?

Back

The net force is 10 N to the left.

Front

What is an example of balanced forces?

Back

An example of balanced forces is when two people push a car with equal force in opposite directions, and the car does not move.

Front

What happens when the net force on an object is zero?

Back

When the net force is zero, the object remains at rest or continues to move at a constant velocity.

Front

If a 5 N force pulls to the right and a 3 N force pulls to the left, what is the net force?

Back

The net force is 2 N to the right.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

How does mass affect the net force?

Back

The greater the mass of an object, the greater the net force needed to change its motion.

Front

What is an example of Newton's 3rd Law in everyday life?

Back

An example is when you jump off a small boat; the boat moves backward as you move forward.