What is the acceleration of a 0.90g drop of blood in the fingertips at the bottom of the swing?

The acceleration of a 0.90 g drop of blood in the fingertips at the bottom of the swing is the sum of the acceleration of the movement of the finger and the acceleration of gravity. In this case, this is different when the finger goes down, since the acceleration now becomes the difference between the two.

Wish i knew this to !