what is acceleration ? explain with example . In simple words

Dear Student,
Acceleration is time rate of change of velocity of an object. It is a vector quantity and is expressed as:
$\overrightarrow{a}=\frac{d\overrightarrow{v}}{dt}$
Example: An object falling down an incline is accelerating because the velocity of the object increases as it moves down the incline.

Regards