VOCABULARY acceleration change in speed during a certain period of time ascent going up descent going down force that which, when acting alone on an object, causes a change in the motion of the object gravity force on Earth which pulls all objects toward its center orbit falling around and around Earth resistance a force opposing the motion of an object or opposing the forces trying to set an object in motion weightlessness feeling or being observed as having no weight RESOURCES Ardley, N. (1992) The science book of gravity.
(descent going down force; causes; a change in the motion of the object gravity force on Earth; T:when acting alone on an object) (a force opposing the motion of an object or opposing the forces; trying; to set an object in motion weightlessness feeling or being observed as having no weight) Context(a force opposing the motion of an object or opposing the forces trying,List([315, 385))):(a force; opposing; the motion of an object) Context(a force opposing the motion of an object or opposing the forces trying,List([315, 385))):(a force; opposing; the forces) Context(a force opposing the motion of an object or opposing the forces trying,List([315, 385))):(a force opposing the motion of an object or opposing the forces; trying to set; an object; in motion weightlessness feeling or being observed as having no weight) (the object gravity force on Earth; pulls; all objects toward its center orbit)
a force opposing the motion of an object or opposing the forces trying,List([315, 385)) a force opposing the motion of an object or opposing the forces trying,List([315, 385)) a force opposing the motion of an object or opposing the forces trying,List([315, 385))
descent going down force a force opposing the motion of an object or opposing the forces a force a force a force opposing the motion of an object or opposing the forces the object gravity force on Earth
causes trying opposing opposing trying to set pulls
a change in the motion of the object gravity force on Earth T:when acting alone on an object
to set an object in motion weightlessness feeling or being observed as having no weight
the motion of an object
the forces
an object in motion weightlessness feeling or being observed as having no weight
all objects toward its center orbit