( ( computation ( of ( average ( and ( instantaneous ( ( velocities and ) derivatives ) ) ) ) ) ) ; )
(ROOT (NP (NP (NN computation)) (PP (IN of) (NP (NN average) (CC and) (JJ instantaneous) (NNS velocities) (CC and) (NNS derivatives))) (: ;)))
computation of average and instantaneous velocities and derivatives;
(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))))) (. .)))