Why does (second) ^{2} occur in unit of acceleration ?

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7. MOTION

easy

Why does (second)$^{2}$ occur in the unit of acceleration ?

Option A

Option B

Option C

Option D

Solution

Acceleration $=\frac{\text { Change in velocity }}{\text { Time taken }}$

Unit of velocity and time is metre per second and second respectively. So Unit of acceleration

$=\frac{m s^{-1}}{s}=m s^{-2}$

Standard 9

Science

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