MFE Gravity and Friction, Contact and Noncontact Forces

Front

What is a force?

Back

A force is any push or pull acting on an object.

Front

What type of force is friction?

Back

Friction is an example of a contact force.

Front

What two factors affect the magnitude of the force of gravity between two objects?

Back

Mass and distance.

Front

In the scenario where a ball stops before reaching a player, what likely caused the ball to stop?

Back

Friction.

Front

How does the friction on an icy road compare to that on a dry road?

Back

An icy road has less friction than a dry road.

Front

Define contact force.

Back

A contact force is a force that occurs when two objects are in physical contact with each other.

Front

Define noncontact force.

Back

A noncontact force is a force that acts on an object without physical contact, such as gravitational force.

Front

What is the relationship between mass and gravitational force?

Back

The gravitational force between two objects increases as the mass of either object increases.

Front

How does distance affect gravitational force?

Back

The gravitational force between two objects decreases as the distance between them increases.

Front

What is the role of friction in motion?

Back

Friction opposes the motion of objects, slowing them down or stopping them.