Question

why second come twice in unit of acceleration?​

Answer 1

Answer:

Acceleration is given by change in velocity divided by time.

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

Explanation:

it is the rate of change of velocity and the velocity is the rate of change of displacement .

so, a = v-u/t

and , (m/s-m/s)/s

that's why there is second square in the denominator m/s²