Random Forces
A force that occurs between the surfaces of two objects that are touching.
What is friction?
Is a push or a pull
What is a force?
What is the force that pulls us to the center of Earth?
Gravity
300 Newtons left vs. 100 Newtons right, what is the net force.
200 Newtons left
What is a magnet?
Give an example of helpful friction
Rubbing hands together for warmth, ect
The process of an object changing position
What is motion or movement?
To say that something is expected to happen
What is predict?
20 N up and 25 N gravity
5 N down
Something that keeps repeating
What is pattern?
A substance that reduces friction between objects in contact
What is lubricant - like oil, grease or WD40?
A collection of forces acting on an object that cancel each other out and produce no change in the object's motion
What is balanced forces?
To pull something closer
What is attract?
30 N to the right and 45 N to the right
75 N right
What is magnetism?
Why does Voyager 1 travel at a continuous speed?
There is not friction in space, no force to alter its course.
A collection of forces acting on an object that result in a change in the object's motion
What is unbalanced forces?
Would gravity be stronger when objects are closer, or farther away?
closer
30 N up and 30 N right
23 N left and 20 N right
3 N left
The places on a magnet where the magentic force is strongest
What are magnetic poles?
Name one kind of repeating circular force
Examples like a clock
How can you see an unbalanced force?
An object moves
Why is Earth's gravity greater than the moon's gravity?
Earth has a greater mass
A train begins its journey pushing with 2,000 Newtons of gravity. What two forces are working to slow the train down?
Friction and gravity
What kind of magnet does our school use at each door?
Electro-magnet