Once the coaster begins to move down the hill, the force of gravity is exerted and the potential energy is transformed into the kinetic energy of the car moving.
(the coaster; begins; ) (the coaster; to move; down the hill) (the force of gravity; is exerted; T:Once the coaster begins to move down the hill) (the potential energy; is transformed; into the kinetic energy of the car moving)
the coaster the coaster the force of gravity the potential energy
begins to move is exerted is transformed
down the hill
T:Once the coaster begins to move down the hill
into the kinetic energy of the car moving