Show:
Forces
Gravity
Friction
Work
Vocabulary
100
A force is a __________ or a ___________
What is a push or a pull
100
Gravity is a __________________ force.
What is pulling?
100
Friction is a force that ___________ or ___________ an object.
What is slows or stops?
100
Work is done when a ____________ makes an object move.
What is a force?
100
In order to apply a force you need ____________.
What is energy?
200
True or False? A force can start an object moving or make it move faster.
What is true
200
Gravity is a force that occurs between how many objects?
What is two?
200
Friction occurs when objects _________ against each other.
What is rub?
200
The tendency of a moving object to stay in motion or a resting object to stay at rest.
What is inertia?
200
A force that slows the motion of a moving object.
What is friction?
300
A force can change the ____________ that an object is moving.
What is direction?
300
True or false? Gravity holds cyclists on bicycle seats and students at desks.
What is true?
300
True or false? Rubbing oil on your bike chain will increase friction.
What is false?
300
When you kick a ball in kickball, this part of your body is doing the work.
What is your foot?
300
What is this an example of? When a tractor trailer truck rolling down a big hill wants to keep going straight instead of turn.
What is inertia?
400
A force can change an objects _____________.
What is speed?
400
True or false? Gravity can slow a moving object down.
What is false?
400
Friction does this to the speed of an object.
What is slows or decelerates?
400
An object in motion stays in motion unless acted upon by _______________________.
What is a force?
400
A force that pulls you toward the center of earth.
What is gravity?
500
A pushing force that works opposite of the effort.
What is resistance?
500
True or false? Gravity holds the earth in orbit around the sun.
What is true?
500
A slope causes an objects speed to ____________.
What is accelerate?
500
Is work being done when you push on a door that says "pull?" Why or why not?
What is no, the door does not move
500
An objects movement can change in two ways. What are the two ways?
What is speed and direction?