Inertia: Newtons first Law

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It means that an object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

Front

What does Newton's first law of motion state?

Back

Newton's first law of motion states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an unbalanced force.

Front

Why does a drink spill when a car turns left suddenly?

Back

The drink spills because the car turns left, but the drink continues moving straight due to inertia, causing it to tip to the right.

Front

What happens to a driver when a car stops suddenly?

Back

The driver is thrown forward against the seatbelt because the car stops, but the driver continues moving forward due to inertia.

Front

What is an example of inertia in everyday life?

Back

An example of inertia is when a person slams on the brakes in a car and is thrown forward.

Front

How does mass affect inertia?

Back

The greater the mass of an object, the greater its inertia. This means heavier objects are harder to start or stop moving.

Front

Why does an 18-wheeler truck have more inertia than a bicycle?

Back

An 18-wheeler truck has more inertia than a bicycle because it has more mass.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion. It is not equal and opposite to other forces acting on the object.

Front

What is the relationship between inertia and motion?

Back

Inertia is directly related to motion; it describes how an object will continue in its current state of motion unless acted upon by an unbalanced force.

Front

What happens to a moving object when no unbalanced force acts on it?

Back

A moving object will continue to move in a straight line at a constant speed.