Forces and Changes in Motion

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, change direction, or change shape.

Tags

NGSS.MS-PS2-2

Front

What is gravitational force?

Back

Gravitational force is the attraction between two objects due to their mass, which pulls them toward each other.

Tags

NGSS.MS-PS2-4

Front

What is friction?

Back

Friction is a contact force that opposes the motion of an object when it is in contact with another surface.

Front

What are contact forces?

Back

Contact forces are forces that occur when two objects are physically touching each other.

Front

What are non-contact forces?

Back

Non-contact forces are forces that act on an object without physical contact, such as gravitational, magnetic, and electric forces.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Front

What is air resistance?

Back

Air resistance is a type of frictional force that opposes the motion of an object moving through air.

Front

How does gravity affect falling objects?

Back

Gravity pulls objects toward the Earth, causing them to accelerate downward when they fall.

Tags

NGSS.5-PS2-1

Front

What is the normal force?

Back

The normal force is the support force exerted by a surface perpendicular to the object resting on it.

Front

What is an example of a non-contact force?

Back

A magnet picking up a metal screw is an example of a non-contact force.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Front

What happens to the gravitational force as distance increases?

Back

As the distance between two objects increases, the gravitational force between them decreases.