S U V A T

These are the formulae that will answer any question you have in the world (so long as it is about something moving at a constant acceleration).
http://www.mathsrevision.net/advanced-level-maths-revision/mechanics/acceleration
You do not need to derive these but it can be useful in helping you to remember them.
http://youtu.be/N6NPDoIoJWY
When you know the formulae you just have to look at the information an decide which one to use. http://www.ronknott.com/MEI/MechSuvatEquns.html.
This needs practice. Lots of practice.

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