( This ( ( ( ( ( give ( the direction ) ) ( of ( the velocity ) ) ) , ) ( since ( ( the ( time ( ( interval or ) increment ) ) ) ( is ( a scalar ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBP give) (NP (DT the) (NN direction)) (PP (IN of) (NP (DT the) (NN velocity))) (, ,) (SBAR (IN since) (S (NP (DT the) (NN time) (NN interval) (CC or) (NN increment)) (VP (VBZ is) (NP (DT a) (NN scalar)))))) (. .)))
This give the direction of the velocity, since the time interval or increment is a scalar.
(ROOT (S (NP (NP (NNP Distance)) (PP (IN over) (NP (NP (NN time)) (PP (IN in) (NP (DT a) (VBN given) (NN direction)))))) (VP (VBZ determines) (NP (NN velocity))) (. .)))