6.1.3 Acceleration
Average velocity · The acceleration formula · Retardation
State the definition and formula of average velocity.
State the meaning, formula and unit of acceleration.
Explain why retardation is a negative acceleration.
Work out acceleration from the values given.
It is worked out when the speed is not uniform.
It needs the whole distance covered in a definite direction.
It needs the total time taken to cover that distance.
Distance divided by time gives the average velocity.
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