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Science final
science
constant | speed that doesn't change |
constant velocity | when speed and direction do not change. |
Formula for momentum | p=mv |
instantaneous speed | when it represents a specific instant in time |
Acceleration | is not just a change in velocity it is how fast that change happens. |
force | a push or a pull acting on an object in a certain direction. |
vector | an arrow represents a force showing magnitude and direcrion |
net force | the combination of all forces acting on a object |
equilibrium | when all forces cancel each other out. |
balance forces | no acceleration no change in motion. |
unbalance forces | no acceleration no change in motion |
Gravity | natural forces of attraction between any two objects |
weight | gravitational force exerted on an object |
inertai | the resistance of an object to a change in the speed or the direction of its motion |
newtons 1st law of motion | an object will stay at rest an object in motion will stay at motion until an unbalanced force acts upon the objects |
air resistance | a.k.a ''drag'' force that air exerts on a moving object |
air resistance depends on | speed,surface area |
list three examples of forces | gravity,normal force,friction |
what is the SI unit for force | newtons |
u need three things for motion what are they | how are u moving,how far i are going,how long does it take to get there |
what are the 5 big things? | 1)use metric system 2)always start @ zero 3)decimal yes 4)lable with units 5)measure to the decimal place that is precise. |
a stationary location or object to which you compare other locations or objects is? | centripetal acceleration |
not always a certain direction | distance |
needs to be a strait line | displacement |
overall length from starting point to ending point | distance |
commonly used when giving directions | distance |
a roller coaster's equals zero meters | displacement |
need to be a certain direction | displacement |
who was our 16 pres | Abraham Lincoln |
who was our 1st pres | George Washington |
who is our 45 pres | Donald Trump |