( ( MOMENTUM Momentum ) ( ( is ( ( ( an ( object 's ) ) mass ) ( times ( its velocity ) ) ) ) . ) )
(ROOT (S (NP (NNP MOMENTUM) (NNP Momentum)) (VP (VBZ is) (NP (NP (NP (DT an) (NN object) (POS 's)) (NN mass)) (PP (CC times) (NP (PRP$ its) (NN velocity))))) (. .)))
MOMENTUM Momentum is an object's mass times its velocity.
(ROOT (S (NP (NNP Momentum)) (VP (MD can) (VP (VB be) (VP (VBN calculated) (PP (IN by) (S (VP (VBG multiplying) (NP (NP (NP (DT an) (NN object) (POS 's)) (NN mass)) (PP (IN in) (NP (NP (NNS kilograms)) (PRN (-LRB- -LRB-) (NP (NN kg)) (-RRB- -RRB-))))) (PP (IN by) (NP (NP (PRP$ its) (NN velocity)) (PP (IN in) (NP (NP (NNS meters)) (PP (IN per) (NP (NP (JJ second)) (PRN (-LRB- -LRB-) (NP (NN m/s)) (-RRB- -RRB-)))))))))))))) (. .)))