Question

Define Acceleration and retardation with its S. I unit​

Answer 1

Answer:

acceleration means a body is gaining speed.SI unit is m/s^2.

retardation means loosing speed.SI unit is m/s^2

Answer 2

Answer:

Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. 

si unit is m/s^2.

Retardation is the act or result of delaying; the extent to which anything is retarded or delayed.

si unit is m/s^2.

hope this helps you..