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 unless acted upon by a net external force.

Front

What does the term 'Inertia' mean?

Back

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

Front

What happens to a cannonball in frictionless space after it is fired?

Back

It continues to move indefinitely without needing any additional force.

Front

What is the relationship between mass and force needed to move an object?

Back

The same amount of force is needed to move 1 kg of feathers as to move 1 kg of iron.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

In which direction does friction act?

Back

Friction acts opposite to the direction of the motion.

Front

What is the formula for force according to Newton's Second Law?

Back

F = ma (Force equals mass times acceleration).

Front

What is an example of an object at rest?

Back

A book lying on a table.

Front

What is an example of an object in motion?

Back

A rolling ball.

Front

What does it mean for an object to be in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero.