Force and Motion

Front

What is friction?

Back

Friction is the force that opposes motion between two surfaces that are in contact with one another.

Front

Does the amount of surface area affect friction on a moving object under air resistance?

Back

True, the amount of surface area does affect the friction.

Front

What are balanced forces?

Back

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

Front

What happens when a runner speeds up?

Back

The runner's speed increases, indicating a change in motion.

Front

What does the Sun's gravity pull into orbit?

Back

The Sun's gravity pulls Earth and other celestial bodies into orbit.

Front

What is motion?

Back

Motion is the change in position of an object over time.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, such as the Earth pulling objects towards its center.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its motion.

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through air.

Front

What is the relationship between force and motion?

Back

Force causes an object to start moving, stop moving, or change direction.