What is kinematics ???
explain !!

yaar koii zinda hai ??? -_-
good morning , btw ✌​

Kinematics is the branch of classical mechanics which describes the motion of points, bodies (objects) and systems of bodies (groups of objects) without looking at the cause of this motion. The term was translated from French; A.M. Ampère used the term cinématique.

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c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !