Forces and Newton's Laws

Front

What is the combination of all the forces acting on an object called?

Back

Net force

Front

What is the direction of motion if an object is pushed to the left?

Back

Movement to the left

Front

How do you calculate net force?

Back

Net force is the vector sum of all individual forces acting on an object.

Front

What does 'Forces come in pairs' represent?

Back

Newton's 3rd law

Front

What does 'For every action, there is an equal and opposite reaction' mean?

Back

It means that for every force exerted, there is a force of equal magnitude but opposite direction.

Front

What is Newton's 1st law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is Newton's 2nd law of motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is inertia?

Back

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

Front

What is the unit of force?

Back

Newton (N)

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object.