Displacement, velocity and acceleration, motion graphs and the SUVAT equations for uniform acceleration.
Mechanics begins with describing how things move. Be careful to distinguish scalars (size only: distance, speed) from vectors (size and direction: displacement, velocity, acceleration).
Key definitions
- Velocity = rate of change of displacement, (m s⁻¹).
- Acceleration = rate of change of velocity, (m s⁻²).
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