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# Physics 30

### How could physics be so fun??

5 x a = 60 a= 12
Conversion: 1 km equals how many meters? 1000
1 minute is the same as how mant seconds? 60
1 hour is how many seconds? 3600
Gravity is the most obvious form of ...? force
Mass times acceleration Equals? force
Can forces cancel each other out? yes
when two forces cancel out threre is no accelaration
do forces always occur in pairs? yes
The acceleration due to gravity is equal to? 9.81 meters per second squared
Does a force do work when it causes a mass to move? yes
what is a lubricant? Lubricants are fluids that hold sliding surfaces apart to reduce friction
What is a bearing? bearings are devices that support moving parts and allow them to move with less friction
What is the formula for velocity? change in distance/ the change in time
What is gravity? Gravity is a downward force that tries to bring all objects to the center of the earth
does gravity always act downward on earth? yes
Does anything that has mass produce gravity? yes
how do we communicate magnitude? magnitude is eaisly communicated with numbers. ie. 100<1000
how do we communicate direction of force? We can use north,east,west, and south
Created by: classclown05

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