Newton's First Law & Safety

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 an unbalanced force.

Front

What is a balanced force?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

Forces that are not equal and opposite, causing a change in motion.

Front

Example of balanced forces in everyday life?

Back

A book resting on a table, where the force of gravity is balanced by the normal force from the table.

Front

Example of unbalanced forces in everyday life?

Back

A car accelerating when the engine applies more force than friction.

Front

What happens to an object when the net force is zero?

Back

The object remains at rest or continues to move at a constant speed in a straight line.

Front

How do you calculate net force?

Back

Net force is the sum of all forces acting on an object, taking direction into account.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

How does mass affect inertia?

Back

The greater the mass of an object, the greater its inertia, meaning it will resist changes in motion more.

Front

What is the net force acting on a boat moving at constant speed?

Back

The net force is zero, indicating balanced forces.