( ( The ( time ( to ( travel ( ( the ( horizontal distance ) ) ( -LRB- ( ( the range ) -RRB- ) ) ) ) ) ) ) ( ( ( is ( equal ( to ( twice ( the time ) ) ) ) ) ( to ( reach ( ( the peak ) ( -LRB- ( ( maximum height ) -RRB- ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN time) (S (VP (TO to) (VP (VB travel) (NP (NP (DT the) (JJ horizontal) (NN distance)) (PRN (-LRB- -LRB-) (NP (DT the) (NN range)) (-RRB- -RRB-))))))) (VP (VBZ is) (ADJP (JJ equal) (PP (TO to) (NP (RB twice) (DT the) (NN time)))) (S (VP (TO to) (VP (VB reach) (NP (NP (DT the) (NN peak)) (PRN (-LRB- -LRB-) (NP (JJ maximum) (NN height)) (-RRB- -RRB-))))))) (. .)))
The time to travel the horizontal distance (the range) is equal to twice the time to reach the peak (maximum height).
(ROOT (S (NP (NNP Range)) (VP (VBZ is) (NP (NP (DT the) (JJ maximum) (JJ horizontal) (NN distance)) (VP (VBN traveled) (PP (IN by) (NP (DT a) (NN projectile)))))) (. .)))
Range is the maximum horizontal distance traveled by a projectile.