( Momentum ( ( ( is then ) ( defined ( as ( ( the mass ) ( of ( ( a body ) ( multiplied ( by ( its velocity ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Momentum)) (VP (VBZ is) (ADVP (RB then)) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (NN mass)) (PP (IN of) (NP (NP (DT a) (NN body)) (VP (VBN multiplied) (PP (IN by) (NP (PRP$ its) (NN velocity)))))))))) (. .)))
Momentum is then defined as the mass of a body multiplied by 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-)))))))))))))) (. .)))