Question

The negative acceleration is called .................. ,(deceleration, zero, ms⁻², magnitude, 5 ms⁻¹, acceleration) Fill in the blank by choosing correct words from the list given in bracket.

Answer 1

Deceleration and it is also known as retardation

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Answer 2

The correct answer to this statement is deceleration.

It is just the opposite of acceleration and is defined as the rate at with objects sows down from its present state of movement.

We can define it as the final velocity minus the initial velocity per unit time.  

If d = deceleration, then we can write d = (Vf- Vt)/t where vf = final velocity, vt= initial velocity and t = time.