# Equations needed for 'Forces and Motion' topic.

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- Created by: Sophie Russell
- Created on: 23-12-13 21:55

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- Equations needed for 'Forces and Motion' topic.
- average speed = distance/time.
- acceleration = change in velocity/time
- a= v-u/t

- force=mass x acceleration
- F= m x a
- Weight = mass x gravity
- w= m x g

- momentum= mass x velocity
- p = m x v

- force = change in momentum/ time taken
- moment = force x perpendicular distance from pivot
- orbital speed = 2 x pi x r / t

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