Question

What is the formulae of retardation

Answer 1

retardation is opposite of acceleration.
when acceleration is - 4 m/s^2 then retardation is 4m/s^2.
It means negative acceleration is written as positive retardation. so there is same formulae for retardation as acceleration.

that is a=(v-u)/t

when acceleration comes in negative then
it is written as positive for retardation.

Answer 2

Answer:

Retardation or deceleration is negative change in velocity per unit time. So, Here, retardation=change in velocity/time(seconds). Retardation= -acceleration.

Explanation: