( ( kinetic ( -LRB- ( ( energy ( in motion ) ) -RRB- ) ) ) ( -LRB- ( ( drop ball ) -RRB- ) ) )
(ROOT (FRAG (S (ADJP (ADJP (ADJP (JJ kinetic)) (PRN (-LRB- -LRB-) (NP (NP (NN energy)) (PP (IN in) (NP (NN motion)))) (-RRB- -RRB-))) (PRN (-LRB- -LRB-) (NP (NN drop) (NN ball)) (-RRB- -RRB-))))))
kinetic (energy in motion) (drop ball)
(ROOT (S (NP (JJ Kinetic) (NN energy)) (VP (VBZ is) (NP (NP (DT the) (NN energy)) (PP (IN of) (NP (NN motion))))) (. .)))
Kinetic energy is the energy of motion.