What are non-contact forces?

Science

Which of these is NOT an example of a non-contact force?

They would hit the ground at the same time.

If a golf ball and a ping pong ball were to fall at the same time, which would hit the ground first?

Magnets are placed in stomachs of cows to catch metals.

Magnets are used for televisions, microwaves and computers.

Magnets are used to store data in computers.

Which of these is NOT a practical use for magnets discussed in our lesson?

It would feel no different than bringing together two other objects.

What would it feel like if two different sides of a magnet are brought together?

Contact forces will only take place if...

If the forces pushing and pulling an object are the same strength then they are...

If a material is very rough, the "bumps" on the surface are...