Question

What is meant by acceleration and retardation?

Answer 1

Acceleration

1. Acceleration is referred to as the increase in velocity of an object per unit of time.
2. Acceleration can be positive(+),0,or negative(-).
3. SI unit of acceleration is m/ s ^-2.

Retardation.

1. . Retardation is just the opposite of acceleration or the decrease of velocity per unit of time.
2. Negative of acceleration is known as retardation.
3. The SI unit of retardation, it is just an oppositely directed acceleration, is m/s².