Accelera'tion. n.s. [acceleratio, Lat.]
- The act of quickening motion.
The law of the acceleration of falling bodies, discovered first by Galileo, is, that the velocities acquired by falling, being as the time in which the body falls, the spaces through which it passes, will be as the squares of the velocities, and the velocity and time taken together, as in a quadruplicate ratio of the spaces.
- The state of the body accelerated, or quickened in its motion.
The degrees of acceleration of motion, the gravitation of the air, the existence or non-existence of empty spaces, either coacervate or interspersed, and many the like, have taken up the thoughts and times of men in disputes concerning them. Hale's Origin of Mankind.