They state how forces applied to an object change its state of motion, that is, the speed and direction of its motion.
(They; state; change its state of motion, that is) Context(They state,List([0, 10))):(forces; applied; to an object; change its state of motion, that is)
They state,List([0, 10))
They forces
state applied
change its state of motion, that is
to an object change its state of motion, that is