Question

Q2.Unit of time occurs twice in unit of acceleration. Why?

Answer 1

Calculating acceleration involves dividing velocity by time — or in terms of units, dividing meters per second [m/s] by second [s]. Dividing distance by time twice is the same as dividing distance by the square of time. Thus the SI unit of acceleration is the meter per second squared.

Answer 2

Acceleration is given by change in velocity divided by time.

Explanation:

The formula of acceleration is given by change in velocity per unit time. The SI unit of velocity is m/s.

Acceleration is given by :

$a=\dfrac{v-u}{t}$

The SI unit of change in velocity is m/s and that of time is seconds. So,

$a=\dfrac{m/s}{s}=m/s^2$

So, the unit of time occurs twice in unit of acceleration.

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Acceleration

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