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# Unit 1:Kinematics SPH3UR

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## Jamie O'Neil

on 29 September 2013

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#### Transcript of Unit 1:Kinematics SPH3UR

Kinematics
Speed and Velocity in one or two dimensions
Average speed = Distance traveled divided by the change in time
Average velocity = The change in position divided by the change in time
d = d + d
2
1
d = d - d
2
1
The study of motion
An arrow over a symbol ( ex. F) indicates a vector quantity which is a quantity that has a magnitude and direction.
Acceleration in one and two dimensions
Acceleration = the change in velocity divided by the time interval
The area under an acceleration time graph is the change in velocity.
The area under a velocity time graph is the displacement.
Acceleration due to gravity
In 2D problems, you can break vector quantities into thier x and y components. ( refer back to the 5 fundamental kinematics equations ) although they can be broken down into their components you must only use all x's or all y's when using an equation they cannot be mixed into one equation.
Projectile motion
V x= x
t
1
where delta x is the distance horizontally (range).
Projectile motion is motion with a constant horizontal velocity combined with a constant vertical acceleration due to gravity( 9.8 m/s ) down.
2
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