Forces & Inertia

Front

What is friction?

Back

Friction is a force that slows down or stops motion when two objects are in contact and rub together.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net force.

Front

What happens to forces when a marble rolls down a ramp?

Back

The forces are unbalanced when a marble rolls down a ramp.

Front

How does mass relate to inertia?

Back

Objects with greater mass also have greater inertia.

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 force.

Front

What is a net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause an object to accelerate.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion.

Front

How does friction affect motion?

Back

Friction opposes motion, causing objects to slow down or stop.

Front

What is an example of inertia in everyday life?

Back

A passenger in a car continues to move forward when the car suddenly stops due to inertia.