In order to understand the possible cause of a 'right side stomach pain', it may be helpful to know the organs and structures that exist in this region of the body. Diseases, infections, or irritation of any of these organs will lead to a right side abdominal pain.
At that one instant, its velocity is zero, even though its acceleration is still 9.8 m/secÂ². But velocity cannot REMAIN at zero for any length of time if the acceleration is nonzero.
if velocity is 0 then it is not necessary that acceleration is also zero....because at one condition when any object through in upward direction then at a final limit v=0 and it back along same direction then acceleration is something in the form of gravitational acceleration....