( Momentum ( ( ( is simply ) ( ( the mass ) ( of ( ( an object ) ( multiplied ( by ( ( the velocity ) ( of ( the object ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Momentum)) (VP (VBZ is) (ADVP (RB simply)) (NP (NP (DT the) (NN mass)) (PP (IN of) (NP (NP (DT an) (NN object)) (VP (VBN multiplied) (PP (IN by) (NP (NP (DT the) (NN velocity)) (PP (IN of) (NP (DT the) (NN object)))))))))) (. .)))
Momentum is simply the mass of an object multiplied by the velocity of the object.
(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-)))))))))))))) (. .)))