Question

define acceleration and retardation​

Answer 1

Answer:

retardation is negative. and acceleration is positive

Explanation:

Answer 2

your answer mate

_____________________________

1)Acceleration is defined as the change in velocity per unit time. Accelerationis measured in m/s2.

2)Retardation. The negative acceleration is calledretardation or deceleration.

______________________________

hope it's helpful for you mate

please follow me

And please mark it as a brainlist