Make use of the article to answer the questions.

Philosophers in antiquity used the concept of force in the study of stationary and moving objects and simple machines, but thinkers such as Aristotle and Archimedes retained fundamental errors in understanding force. In part this was due to an incomplete understanding of the sometimes non-obvious force of friction, and a consequently inadequate view of the nature of natural motion. A fundamental error was the belief that a force is required to maintain motion, even at a constant velocity. Most of the previous misunderstandings about motion and force were eventually corrected by Galileo Galilei and Sir Isaac Newton. With his mathematical insight, Sir Isaac Newton formulated laws of motion that were not improved-on for nearly three hundred years. By the early 20th century, Einstein developed a theory of relativity that correctly predicted the action of forces on objects with increasing momenta near the speed of light, and also provided insight into the forces produced by gravitation and inertia.

1. Who corrected misconceptions about motion and force?
2. Who compiled laws of motion?
3. Were they ever improved?
4. After how long?
5. Who furthered knowledge of gravity and inertia?
6. What did his theory of relativity predict?
7. When was it developed?
8. What misconception did Aristotle have?
9. Did anyone else share this misconception?
10. Who?
11. Is force required to maintain motion?
12. Did Aristotle and Archimedes correctly understand that theory?
13. Who eventually corrected the falsehoods?

Numbered answers:
1. Galileo Galilei and Sir Isaac Newton
2. Sir Isaac Newton
3. yes
4. three hundred years
5. Einstein
6. the action of forces on objects with increasing momenta near the speed of light
7. early 20th century
8. force of friction
9. yes
10. Archimedes
11. no
12. no
13. Galileo Galilei and Sir Isaac Newton