Newton's First Law of Motion

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 at a constant speed and in a straight line unless acted upon by a net external force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It depends on the mass of the object.

Front

True or False: An object's inertia is affected by its mass.

Back

True

Front

If a ball is in motion and balanced forces act on it, what will happen?

Back

The ball will continue to move at a constant speed & in the same direction.

Front

Why does the tablecloth trick work?

Back

The dishes have inertia, and therefore stay on the table.

Front

Because of inertia, a resting object will remain at ________.

Back

rest

Front

Objects with greater _________ also have greater inertia.

Back

mass

Front

What happens to a moving object when unbalanced forces act on it?

Back

It will accelerate in the direction of the net force.

Front

What is the relationship between mass and inertia?

Back

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

Front

What is a net external force?

Back

A net external force is the overall force acting on an object when all the individual forces acting on it are combined.