Headings Forces and
Motion Search Questions 
Equations.
Click on the equation for more information.
These equations are important!
1. Acceleration = change
in velocity ÷ time.
a =
(v-u) ÷
t
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
4. Momentum = mass x
velocity.
p
= m x v
5. Change in momentum =
Force x time.
mv -
mu
= F x t
Number 5 can be rearranged to give
F = (mv - mu)
÷ t
See calculations for worked examples.
Headings Forces and
Motion Search Questions
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