( Determine ( ( ( the momentum ) ( of the ) ) ( ( ( dropped ball ) ( by ( ( multiplying ( ( it 's ) mass ) ) ( by ( the velocity ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Determine)) (NP (NP (DT the) (NN momentum)) (PP (IN of) (NP (DT the)))) (VP (VBD dropped) (NP (NN ball)) (PP (IN by) (S (VP (VBG multiplying) (NP (NP (PRP it) (POS 's)) (NN mass)) (PP (IN by) (NP (DT the) (NN velocity))))))) (. .)))
Determine the momentum of the dropped ball by multiplying it's mass by the 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-)))))))))))))) (. .)))