( ( Because ( momentum ( is ( ( ( ( the product ) ( of ( the mass ) ) ) and ) ( ( the velocity ) ( of ( an object ) ) ) ) ) ) ) ( , ( ( that ( ( ( both mass ) and ) velocity ) ) ( ( affect ( ( the momentum ) ( of ( an object ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Because) (S (NP (NN momentum)) (VP (VBZ is) (NP (NP (NP (DT the) (NN product)) (PP (IN of) (NP (DT the) (NN mass)))) (CC and) (NP (NP (DT the) (NN velocity)) (PP (IN of) (NP (DT an) (NN object)))))))) (, ,) (NP (DT that) (NP (DT both) (NN mass)) (CC and) (NP (NN velocity))) (VP (VBP affect) (NP (NP (DT the) (NN momentum)) (PP (IN of) (NP (DT an) (NN object))))) (. .)))
Because momentum is the product of the mass and the velocity of an object, that both mass and velocity affect the momentum of an object.
(ROOT (S (NP (NNP Momentum)) (VP (VBZ is) (ADJP (RB directly) (VBN related) (PP (TO to) (NP (NP (DT both) (NN mass)) (CC and) (NP (NN velocity)))))) (. .)))