Introduction to Forces 6.7A

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.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

How can you increase the gravitational force between two objects?

Back

You can increase the gravitational force by increasing the mass of one or both objects or by decreasing the distance between them.

Front

What is normal force?

Back

Normal force is the support force exerted upon an object that is in contact with another stable object, acting perpendicular to the surface.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, caused by the contact between two surfaces.

Front

What happens to the normal force when you push harder against a surface?

Back

The normal force increases when you push harder against a surface.

Front

What type of force does a juggler apply to keep the balls in the air?

Back

The juggler applies an applied force to keep the balls from falling.

Front

Which surface would create the least friction for sliding?

Back

Socks create the least friction compared to bare feet or running shoes.

Front

What is the relationship between mass and gravitational force?

Back

The greater the mass of an object, the stronger the gravitational force it exerts.

Front

What is the effect of distance on gravitational force?

Back

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