( ( To ( calculate ( ( the momentum ) ( of ( a moving ) ) ) ) ) ( ( object ( multiply ( ( the mass ) ( of ( ( the object ) ( times ( its velocity ) ) ) ) ) ) ) . ) )
(ROOT (S (S (VP (TO To) (VP (VB calculate) (NP (NP (DT the) (NN momentum)) (PP (IN of) (NP (DT a) (NN moving))))))) (VP (VBP object) (VP (VB multiply) (NP (NP (DT the) (NN mass)) (PP (IN of) (NP (NP (DT the) (NN object)) (PP (CC times) (NP (PRP$ its) (NN velocity)))))))) (. .)))
To calculate the momentum of a moving object multiply the mass of the object 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-)))))))))))))) (. .)))