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Chapter 4: Working with vectors

Combining displacements and velocities

In order to calculate displacement trigonometry needs to be used (Pythagoras's theorem may be
used)
Always state the magnitude of the displacement and the angle the displacement makes with the
positive x axis
If you are travelling at an angle then…

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The horizontal velocity will always remain constant
It can worked out using s = ut
The vertical velocity will always increase
It can worked out using the equations of motion

Summary

Vectors are quantities that must have a direction associated with them
Vectors can be added if direction is taken…

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