Across
- 6. The gravitational force on an object; this depends on the object’s mass and the strength of the gravitational field (g).
- 7. The horizontal axis on a graph.
- 12. An object falling under the influence of gravity, but no other forces.
- 13. The net force toward the center of a circle.
- 15. How far an object is from where it started.
- 16. The heavier an object is, the harder it is to make it start moving. That’s because of this force.
- 17. For a rectangle: base * height. For a rectangle: 1/2 * base * height.
- 20. A vector arrow tells you the _______ of a physical quantity.
- 21. Newton’s third law of motion says that forces always occur in _______.
- 24. The change in velocity that occurs as an object moving in a circle continually changes direction.
- 31. A drawing that uses arrows to show all the forces acting on an object.
- 33. A physical quanitity that includes a direction. Also, an arrow showing that direction.
- 35. The size of a physical quantity (how much of it is there?).
- 36. The tendency of an object to keep doing what it’s doing (to resist acceleration).
Down
- 1. The time it takes an object to make one complete revolution around a circular path.
- 2. The total force acting on an object. Also known as ∑F.
- 3. A launched object where gravity is the only force acting on it.
- 4. The rate at which an object’s velocity changes.
- 5. The vertical axis on a graph.
- 8. Measured in radians, this is a way to measure where an object is on a circular path.
- 9. A force that exists between any two objects in the universe, but is noticeable only when at least one of the objects has a huge mass.
- 10. In a graph, this shows how the rate at which the y-variable changes as the x-variable changes.
- 11. An interaction between two objects; this is what causes motion.
- 12. The number of revolutions an object moving in a circular path makes in one second.
- 14. Where an object is located.
- 18. This force opposes the motion of a moving object. Yetis slapping hands!
- 19. Speed in a certain direction (displacement per unit time).
- 22. Distance traveled per unit time.
- 23. Two lines that are always the same distance from each other, so that they never meet.
- 25. A unit used to measure angles. One full circle = 2πr of these units.
- 26. At a right angle.
- 27. The distance, s, measured in meters that an object has moved around a circular path.
- 28. The distance from the center of a circle to the edge of the circle.
- 29. The curved path of an object in space; an object in free fall follows this path if its fall matches the curvature of Earth.
- 30. A type of force. In math terms, this word means perpendicular.
- 32. How far an object has traveled.
- 34. This changes the direction of a force without changing the magnitude of the force.
- 35. A measure of how much inertia an object has; measured in kilograms.