What Formulas Are
This lesson covers:
- What a 'formula' is, and the basics of how to use formulas
- We cover the details of how to rearrange them, and specific formulas, in other lessons
A formula is a fact or rule that is written using mathematic symbols.
For example the formula for speed is:
s=td
where s is speed, d is distance and t is time.
Which of the following is a formula?
a=tΔv
52a+3−a
32x=6
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A car travels 120m (d) in 15 seconds (t). Use the formula below to find the speed (s) of the car.
s=td
m/s
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Which of the following is a formula?
KE=0.5mv2
3m=7m−6
3m−2v2
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An objects has a mass of 30 kg (m) and a volume of 0.2 m3 (V). Find the density (⍴) of the object.
ρ=Vm
kg/m3
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