Force Basics
A force is best described as
A push or a pull
What forces act on a swing?
Gravity and friction
Which surface would usually create the most friction, a rough carpet or polished tile?
Rough carpet
How is magnetism different from most contact forces?
Magnetism can push or pull without any contact.
Which force pulls objects toward Earth's surface?
Gravity
True or false, a pencil rolling away from you is a pull.
False, It is a push.
True or false, A kick to a still ball forward is a force changing motion?
True, The kick changes the ball from resting to motion.
Why is oil used on moving machine parts?
It is used to reduce friction.
What happens when the north pole of a magnet faces the south pole of another?
They will attract.
True or false, Friction can be helpful because it helps shoes grip the ground.
True
Balanced forces are when what happens
Balanced forces are when two forces are pushing against each other and there is no change in motion.
Motion is the process of what changing position
Motion is the process of an object changing position.
Friction is what type of force
Friction is a contact force.
What are the three primary magnetic metals?
The three metals are nickel, iron, and cobalt.
What are magnetic trains called?
They are called Maglev Trains.