Newton's Laws

Any push or pull on an object.

• force
• velocity 
• inertia
• momentum

When an unbalanced force acts on an object, the force ______________________.

• changes the motion of the object

• is cancelled by another force

• does not change the motion of an object

• is equal to the weight of the object

A student leaves a pencil on a desk and the pencil stays in the same spot until another student picks it up.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

For every action there is an equal and opposite reaction.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

The combination of all the forces acting on an object is the...

• net force
• action force
• reaction force
• balance force

According to Newton’s second law of motion, force is equal to mass times ______________________.

• inertia

• weight

• acceleration

• direction

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

The picture is an example of Newton's...

• 1st Law

• 2nd Law

• 3rd Law

A person’s body is thrown outward as a car rounds a curve on a highway.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

When two equal forces act in opposite directions on an object, they are called ______________________.

• frictional force

• balanced force

• centripetal force

• gravitational force