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Kinematic Equations
- Vf = Vi + a*t
- Vf^2 = Vi^2+2*a*D
- D = Vi*t + (1/2)*a*t^2
- D = Vf*t - (1/2)*a*t^2
- D = (1/2)*(Vf+Vi)*t
Take note of the missing variable for each equation, these don't have to be memorized since they are clearly derived from one root function.
Example
A car starts at rest and accelerates at 3 m/s^2 for 8 seconds. How far did it go?
Variables
- Vi = 0 m/s
- a = 3 m/s^2
- t = 8 seconds
Equation(s)
- D = Vi*t + (1/2)*a*t^2
- D = 0*8 + (1/2)*3*8^2
- D = 0 + 96
- D = 96 m
- Vf = Vi + a*t
- Vf = 0 + 3*8
- Vf = 24 m/s
