Describing Motion and Force Lesson 1 review

Front

What are the three NON-CONTACT forces?

Back

Gravity, electricity, and magnetism.

Front

What is the definition of relative motion?

Back

Relative motion is the calculation of the motion of an object with regard to some other moving object.

Front

If you push on an object with a force of 20 N and it doesn't move, what is the force exerted back on you?

Back

20 N.

Front

What is the difference between a contact force and a non-contact force?

Back

Contact forces are applied only when objects touch, while non-contact forces act at a distance without physical contact.

Front

What is an example of a contact force?

Back

Friction between two surfaces.

Front

What is an example of a non-contact force?

Back

Gravity.

Front

What happens to the forces when two objects interact?

Back

They exert equal and opposite forces on each other (Newton's Third Law).

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses.

Front

What is air resistance?

Back

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