Question

explain angular accelaration.

Answer 1

dear friend
angular acceleration is a rate of change of angular velocity , in three dimensions , it is a pseudovector .
it SI unit is measured in radians per second square
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Answer 2

Angular acceleration also called the angular acceleration is a quantitative expression of the change in angular velocity that a spinning object undergoes per unit time. It is a vector quantity , consisting of magnitude component and either of two defined direction or senses .