( Momentum ( ( is ( calculated ( by ( ( ( taking ( ( the mass ) ( of ( a body ) ) ) ) and ) ( ( multiplying ( that number ) ) ( by ( its velocity ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Momentum)) (VP (VBZ is) (VP (VBN calculated) (PP (IN by) (S (VP (VP (VBG taking) (NP (NP (DT the) (NN mass)) (PP (IN of) (NP (DT a) (NN body))))) (CC and) (VP (VBG multiplying) (NP (DT that) (NN number)) (PP (IN by) (NP (PRP$ its) (NN velocity))))))))) (. .)))
Momentum is calculated by taking the mass of a body and multiplying that number 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-)))))))))))))) (. .)))