Question

when the initial velocity of the object is not zero.

Answer 1

Answer:

when ever time is zero (t=0)

Explanation:

initial velocity is zero when the body starts from rest

this may help you

Answer 2

Answer:Not starting from rest

Explanation:Any body which start moving from rest it hasthe initial velocity=0. In the other case the observer and the body are not in same frame of reference, initial velocity not equal to zero