Question

why 'second' comes twice in unit of acceleration​

Answer 1

Answer:

Acceleration is given by change in velocity divided by time.

Acceleration is given by : The SI unit of change in velocity is m/s and that of time is seconds. So, So, the unit of time occurs twice in unit of acceleration

Answer 2

Answer:

a = v-u/t ... v is m/s and u is m/s ... so 1 sec gets cancel ... remaining only 2 ... so a is m/s square

I think this should be the answer