p2 rev notes

acceleration,v-t and d-t graphs

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AQA P2
VELOCITY, ACCELERATION+DISTANCE & VELOCITY TIME GRAPHS
Speed=how fast an object is moving.
Velocity=speed and direction.
Acceleration=how quickly velocity is changing.
DISTANCE
m
SPEED TIME
m/s secs
Acceleration=change in velocity
Time taken
DT Graphs
Gradient=speed
Flat bits=stationary
Downhill=returning to start
To calculate speed do vertical
Horizontal
VT Graphs
Gradient=acceleration
Flat bits=steady speed
Down/uphill=acc/deceleration
To calculate acceleration do vertical again
Horizontal
BUT...for the speed just read off the velocity axis because speed and velocity are pretty much
same remember.
And distance travelled=area under graph.

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