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Friction & Motion
Gravity & Motion
Definitions
Measuring Motion
What Affects Motion?
100
Friction does this to an objects motion.
What is slows?
100
The amount of matter in an object is its...
What is mass?
100
To find your ______, divide the distance you travel by the time it takes.
What is speed?
100
The formula for speed is.....
What is distance divided by time?
100
In order for an object to move, it must have a _____________. (Hint: stopping or starting force)
What is starting force?
200
Because of friction, if you vigorously rub your hands back and forth together they will do this...
What is get hot?
200
Gravity is a force that acts to pull pairs of objects......(Hint: together or apart)
What is together?
200
Speed in a certain direction is _____.
What is velocity?
200
The difference between speed and velocity is that velocity must have ___________.
What is direction?
200
Force affects ________.
What is motion?
300
Friction takes place where two surfaces....
What is rub together?
300
Weight is a measure of the amount of _________ that gravity exerts on you.
What is force?
300
An object's _______ is its tendency to continue moving or to remain at rest.
What is inertia?
300
The number of kilometers something can travel in one hour is called its....
What are kilometers per hour?
300
Inertia is the tendency of objects at rest to stay at rest, or objects in motion to ____________.
What is stay in motion?
400
Of a skateboard and a box filled with books, the one that produces LESS friction when being drug across the floor.
What is a skateboard?
400
Objects that are closer together have a _________ attraction between them. (Hint: greater or weaker)
What is greater?
400
When discussing how rough or smooth something is you are discussing its....
What is surface texture?
400
Rosario rode her bike 24 miles in 2 hours. ________ was her speed in miles per hour.
What is 12?
400
When you push against a door, the force of the door is __________.
What is pushing back at you?
500
This type of friction, is caused by gas molecules in the air hitting an object and slowing it down.
What is air resistance?
500
________ can be an increase or decrease in speed or a change in direction.
What is acceleration?
500
The rate at which velocity is changing is ______.
What is acceleration?
500
When Rosario was riding her bike, she rode it 24 miles in 2 hours going south. Her velocity was _________.
What is 12 miles per hour south?
500
Force works in equal and opposite pairs. We call this __________.
What is action - reaction?