Friction
The definition of friction.
What is a contact force that opposes the motion of an object?
A push or pull
What is force?
The rate at which, or how fast, an object changes position.
What is speed?
A noncontact force tat pulls objects toward one another.
What is gravity?
An objects location
What is position?
The amount of this between two objects depends on their surfaces.
What is friction?
Forces changes these for an object
What are position and direction?
An object that does NOT change how fast it moves is moving at this
What is a constant speed?
The pull of gravity gives an affects this
What is its weight?
a noncontact force that pulls or attracts metal objects containing iron
What is magnetism?
Friction can cause an object to do this
What is slow down or stop?
A force causes these three things to change
What are motion, speed, and direction?
An object that does not change speed can have this predicted.
What is it's future motion?
Gravity pulls you toward this.
What is Earth's center?
Materials that magnets do not attract.
What are wood, plastic, paper, and aluminum?
These cause a bowling ball to roll faster
Can push or pull an object without touching it
What is a noncontact force?
An object that changes speed is at this
What is a variable speed?
People weigh less on the moon because of this.
What is the moon has less gravity?
The amount if matter an object has
What is mass?
Grass is harder to petal on because of this
What is friction?
To push or pull and object with more MASS you need this
What is more force?
A car moving through traffic is moving at this type of speed
What is variable speed?
Your mass is the same on the moon and Earth, but this is different
What is weight?
Forces that work together and make no change in an objects motion
What are balanced forces?