BRAINCAKEEquations of Motion - Uniform Acceleration
Acceleration is the rate of change of velocity. If the acceleration is uniform, this gives the formula:
Rearranging gives the first equation of motion for uniform acceleration
1. v = u + at
The symbols used give the mnemonic suvat.
s = displacement, u = initial velocity, v = final velocity a = acceleration, t = time
In the following graph the object has constant acceleration.
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Key terms in this lesson
- displacement
- The distance an object has moved in a straight line from its starting point, in a particular direction.
- velocity
- The rate of change of displacement of an object; speed in a given direction.
- acceleration
- The rate of change of velocity of an object.
More in Forces and Motion
- Average Speed
- Displacement and Velocity
- Displacement on a Velocity-time Graph
- Acceleration
- Free Fall Under Gravity
- Projectile Motion
- Car Stopping Distances
- Weight, Mass, Accleration
All 17 lessons in Forces and Motion · All OCR AS-level Physics topics