Confused about acceleration and velocity?

Question

In my exercise booklet it sometimes says acceleration equals m/s^2 and sometimes = m/s, and the same with velocity...

so how do i know which one is for which?

Answer 1

if it does, it is an error...

In the standard metric system...[ MKS ] ... acceleration is always ... m / s^2

and units of ... m / s ... represents velocity.......

Answer 2

The speed in a particular direction is called velocity. ie. the "distance per unit time", or "metres/ second" or "m/s".
Velocity = m/s
If equal distances are travelled in equal intervals of time it is called "uniform velocity". When we are accelerating a car or a bike its velocity increases. ie. unequal distances in equal intervals of time. The ditances can be "more" or "less". This "increasing / decreasing" rate is called "acceleration / retardation".
Rate means "how much is the increase in unit time" or "how much is the change in velocity in one second". When velocity is expressed in "m/s", change in velocity too will be expresed in "m/s". Change in velocity per second has to be written as m/s per second ie. m/s/s= m/(sxs) = m/s²
Hence,
Velocity is expressed in m/s
Acceleration is expressed in m/s².
Hope you are satisfied.