( ( ( ( Atmospheric drag ) , ) ( ( the coefficient ) ( of ( ( ( ( ( ( drag ( for ( the object ) ) ) , ) ( ( the ( -LRB- ( instantaneous ( -RRB- velocity ) ) ) ) ( of ( the object ) ) ) ) , ) and ) ( ( the area ) ( presented ( to ( the airflow ) ) ) ) ) ) ) ) ( ( determine ( terminal velocity ) ) . ) )
(ROOT (S (NP (NP (JJ Atmospheric) (NN drag)) (, ,) (NP (NP (DT the) (NN coefficient)) (PP (IN of) (NP (NP (NP (NN drag)) (PP (IN for) (NP (DT the) (NN object)))) (, ,) (NP (NP (DT the) (-LRB- -LRB-) (NN instantaneous) (-RRB- -RRB-) (NN velocity)) (PP (IN of) (NP (DT the) (NN object)))) (, ,) (CC and) (NP (NP (DT the) (NN area)) (VP (VBN presented) (PP (TO to) (NP (DT the) (NN airflow))))))))) (VP (VBP determine) (NP (NN terminal) (NN velocity))) (. .)))
Atmospheric drag, the coefficient of drag for the object, the (instantaneous) velocity of the object, and the area presented to the airflow determine terminal velocity.
(ROOT (S (NP (JJ Instantaneous) (NN velocity)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (NN velocity)) (PP (IN of) (NP (DT the) (NN object))))) (PP (IN at) (NP (DT a) (VBN given) (NN moment))))) (. .)))