Since they weigh the same, they must exert the same force, and since they both go the same distance, they each do the same amount of work.
(they; weigh; the same) (they; must exert; the same force; T:Since they weigh the same) (they; go; the same distance) (they; do; the same amount of work)
they they they they
weigh must exert go do
the same
the same force T:Since they weigh the same
the same distance
the same amount of work