Benchmark 10B
Historical Perspectives: Uniting the Heavens and Earth
Grades 9-12, page 243

Newton's system was based on the concepts of mass, force, and acceleration, his three laws of motion relating them, and a physical law stating that the force of gravity between any two objects in the universe depends only upon their masses and the distance between them.

See Content Standard G History and Nature of Science (grades 9-12): Historical Perspectives