Force and Motion Basics

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces rub against each other.

Front

What is gravity?

Back

Gravity is the force that pulls objects toward each other, such as the force that pulls objects toward the Earth.

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 force.

Front

What is a balanced force?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

Unbalanced forces are not equal and can cause an object to start moving, stop moving, or change direction.

Front

How does friction affect motion?

Back

Friction slows down or stops the motion of an object by opposing its movement.

Front

What happens to a book when it falls off a desk?

Back

The book falls due to the force of gravity pulling it toward the floor.

Front

What is the role of gravity in motion?

Back

Gravity pulls objects toward the center of the Earth, influencing how they move and fall.

Front

Can friction be helpful?

Back

Yes, friction can be helpful as it allows us to walk without slipping and helps objects stay in place.

Front

What is an example of an unbalanced force?

Back

A water bottle tipping over is an example of an unbalanced force acting on it.