Dynamics

4. What specific orbit altitude maintains a 24-hour rotation matching Earth's rotation?
7. Which type of friction resists solid surfaces sliding past each other once motion begins?
8. What term describes forces that are equal in strength but opposite in direction, resulting in no change in motion?
9. What English scientist formulated the three fundamental laws of motion in the 1600s?
12. According to Newton's Second Law, net force equals mass multiplied by ______?
14. What is the constant state of free fall allows a satellite to match the curvature of the primary body called?
15. Newton's Third Law states that every action has an equal and _______ reaction?
19. What force propels a person forward when walking by pushing against the ground?
22. Which type of orbit occurs at an altitude between 160 km and 2,000 km?

1. What opposing force is exerted in the opposite direction of an object's motion across a surface?
2. What is the natural tendency of an object that causes it to resist any change in its motion called?
3. An object that orbits a larger primary body in space is called a ___________.
5. What controls the amount of inertia an object possesses?
6. What is reached when air resistance equals the downward gravitational force of a falling object?
10. What center-seeking force pulls an object toward the middle of a circular path?
11. A physical quantity with both magnitude and direction.
13. Which type of friction opposes rolling motion and is much weaker than sliding friction?
16. Action and reaction force pairs do not cancel out because they act on different _____________?
17. What type of force requires direct physical interaction between objects to act?
18. What is the standard scientific unit used to measure force?
20. What measures the force of gravity exerted on a mass?
21. What type of friction or resistance is felt when moving through liquids or gases?