5th grade Force

Front

What is force?

Back

A push or pull on an object that can cause it to move, stop, or change direction.

Front

What is inertia?

Back

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 friction?

Back

A force that opposes the motion of an object when it comes into contact with another surface.

Front

What is thrust?

Back

A forward pushing force that changes the position and motion of an object.

Front

What happens to an object at rest if no forces act on it?

Back

It will stay at rest.

Front

What happens to an object in motion if no forces act on it?

Back

It will continue to move at a constant speed in a straight line.

Front

What is gravity?

Back

A force that pulls objects toward each other, such as the pull of the Earth on objects.

Front

What is momentum?

Back

The quantity of motion an object has, which depends on its mass and velocity.

Front

How does friction affect motion?

Back

Friction slows down or stops the motion of an object.

Front

What is the effect of the absence of friction on a moving object?

Back

The object would remain at a constant speed.