The Positive Sciences of the Ancient Hindus c5.s1.5

c5.s1.5

(i) The successive motions of a particle may be in the same direction (rectilinear), *e.g.* (*a*) upward or downward vertical motion, as in throwing upwards or downwards in the case of objects moved by volition directly or indirectly (उत्क्षेपणं, अपक्षेपणं), or (*b*) other forms of rectilinear motion, contraction, dilation (आकुञ्चनं, प्रसारणं); or