( ( ( Calculate ( the ( momentum ( and ( kinetic energy ) ) ) ) ) ( ( ( before and ) after ) ( ( the collision ) ( to ( demonstrate ( ( the conservation ) ( of ( ( energy and ) momentum ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Calculate) (NP (DT the) (NN momentum) (CC and) (JJ kinetic) (NN energy)) (SBAR (IN before) (CC and) (RB after) (S (NP (DT the) (NN collision)) (VP (TO to) (VP (VB demonstrate) (NP (NP (DT the) (NN conservation)) (PP (IN of) (NP (NN energy) (CC and) (NN momentum))))))))) (. .)))
Calculate the momentum and kinetic energy before and after the collision to demonstrate the conservation of energy and momentum.
(ROOT (S (NP (DT A) (ADJP (RB perfectly) (JJ inelastic)) (NN collision)) (VP (VBZ reduces) (NP (JJ internal) (JJ kinetic) (NN energy)) (PP (TO to) (NP (NP (DT the) (NN minimum)) (SBAR (S (NP (PRP it)) (VP (MD can) (VP (VB have) (NP (NN while)) (ADVP (RB still)) (S (VP (VBG conserving) (NP (NN momentum))))))))))) (. .)))