Newtons First Law

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is a force?

Back

A force is a push or a pull on an object.

Front

What does it mean for forces to be balanced?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces are not equal and can cause an object to start moving, stop moving, or change direction.

Front

What is inertia?

Back

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

Front

How does friction affect motion?

Back

Friction is a force that opposes motion, causing objects to slow down or stop.

Front

What happens to a marble on a frictionless surface?

Back

The marble would remain at a constant speed.

Front

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

Back

The net force is 0.

Front

What is an example of an unbalanced force?

Back

A person pushing a stationary car; if the force is strong enough, the car will move.

Front

What is the relationship between mass and inertia?

Back

The greater the mass of an object, the greater its inertia.