Contact/Non-Contact
Definitions
Definitions 2
Definitions 3
Scenarios
100
A balloon making your hair stand up
What is a non-contact force?
100
The speed and direction of a moving object
What is velocity?
100
A push or pull that causes an object to move in the direction of the force.
What is an unbalanced force?
100
A force that pulls objects toward each other -- more massive objects have a greater pull
What is gravitational force?
100
Mrs. Niner is sitting under a tree at the apple orchard, and an apple falls on her head. This non-contact force did it!
What is gravity?
200
An apple falling out of a tree
What is a non-contact force?
200
pushes and pulls that happen without the direct touching of objects
What is a non-contact force?
200
A force that pulls objects with the opposite poles towards each other.
What is magnetic attraction?
200
An object at rest or in motion will remain unchanged unless an unbalanced force acts on it
What is Newton's 1st Law of Motion?
200
Mr. Short is pushing a cart down the hall. Ms. Ray comes and pushes it with him. The cart will: accelerate, change direction, continue unchanged, remain at rest.
What is accelerate?
300
A compass needle turns to face the North
What is a non-contact force?
300
A place or object used for comparison to determine if something is in motion
What are points of reference?
300
The distance an object travels in an amount of time.
What is speed?
300
A straight line on a speed graph represents this type of motion
What is constant motion or constant speed?
300
A bowling ball is rolling down the lane. The forces acting on it are balanced. Its motion will: change direction, speed up, continue unchanged or stop.
What is continue unchanged?
400
Ice skates scraping on the ice
What is a contact force?
400
Equal forces acting on one object in opposite directions. These do not change the object's motion.
What are balanced forces?
400
The force of two surfaces in contact with each other -- this slows an object down.
What is friction?
400
These units are used for force.
What are Newtons (N)?
400
Miss Wilson is pushing on the left side of a desk with 30N. Mrs. Rachwal is pushing on the right side with 40N. The desk will move....
What is 10N towards Miss Wilson?
500
A satellite orbiting a planet
What is a non-contact force?
500
The resulting force of unbalanced forces.
What is net force?
500
A change in either speed or direction
What is acceleration?
500
The greater the mass, the greater the amount of force needed to accelerate an object.
What is Newton's 2nd Law of Motion?
500
50N of force are being applied to a box on both sides. The net force is ______ and the force is balanced/unbalanced.
What is 0 and balanced?
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