( ( Beginning students ) ( ( confuse ( ( related concepts ) ( such ( as ( ( ( ( ( ( acceleration and ) velocity ) , ) ( ( mass and ) weight ) ) or ) ( ( force and ) momentum ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Beginning) (NNS students)) (VP (VB confuse) (NP (NP (VBN related) (NNS concepts)) (PP (JJ such) (IN as) (NP (NP (NN acceleration) (CC and) (NN velocity)) (, ,) (NP (NN mass) (CC and) (NN weight)) (CC or) (NP (NN force) (CC and) (NN momentum)))))) (. .)))
Beginning students confuse related concepts such as acceleration and velocity, mass and weight or force and momentum.
(ROOT (S (NP (NNP Momentum)) (VP (VBZ is) (ADJP (RB directly) (VBN related) (PP (TO to) (NP (NP (DT both) (NN mass)) (CC and) (NP (NN velocity)))))) (. .)))