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.
Instantaneous velocity is like taking a sample of an object's movement randomly. If there is a car moving at 60 miles per hour for 10 miles and there is a sample of the velocity at the 3 mile point, it will show the 60 mph speed. The measurement taken in that instant is the instantaneous velocity.