Can someone please tell me what book is about velocity polygon and corelis acceleration?
What are those?
By "velocity polygon" are you referring perhaps to how it can sometimes look like a polygon when drawing out the addition of two vectors?
Perhaps the OP is referring to the idea that, in many mechanism problems, it is convenient to express position relations in terms of a polygon that remains closed at all times, although it may deform as parts move and time passes.
When these relations are differentiated with respect to time, the result is a closed polygon of velocity vectors.
The Coriolis acceleration falls out naturally wherever it is relevant with this approach to kinematics.
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