GCSE PHYSICS - What are the Equations for Forces and Motion?

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The Equations for Forces and Motion.

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1. acceleration = change in velocity ÷ time.
a = (v-u) ÷ t

number 1 can be rearranged to give
v - u = a x t or t = (v-u) ÷ a

2. force = mass x acceleration.
F = m x a

number 2 can be rearranged to give
m = F ÷ a or a = F ÷ m

3. weight = mass x gravity.
w = m x g

number 3 can be rearranged to give
m = w ÷ g or g = w ÷ m

4. momentum = mass x velocity.
p = m x v

number 4 can be rearranged to give
m = p ÷ v or v = p ÷ m

5. change in momentum = force x time.
mv - mu = F x t

number 5 can be rearranged to give
F = (mv - mu) ÷ t

See some examples of calculations for the above equations.

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