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Across 1. ______ hill. The highest hill in a roller coaster. It gives it potential energy. 3. _________ G force. A force greater than the normal force of gravity in which a person feels heavier than normal. 4. __________ induction motor. A type of motor used in roller coasters to move cars up a hill by use of electromagnets. 7. The change in level from horizontal to pitched on race tracks to reduce centrifugal inertia or outward force 9. ___________ acceleration. The acceleration of an object as it goes around a curve. [equals velocity squared divided by the length of the radius). 10. Newton's ____________ Law of Motion. Force equals mass times acceleration 14. A change in velocity over time or a change in direction 15. __________ velocity. The total distance a coaster travels divided by the total time it takes to travel that distance. 18. Free _____ diagram. A vector drawing which shows the forces on an object and their resolution into a final resultant force. 19. The inward directed force which keeps objects moving in a circle (example, a ball on the end of string is kept in a circle by the string) 20. Distance divided by time 21. A device which measures angles and is used to determine the height or distance of remote objects.

Down 2. A force which pushes against an object in motion produced by the rubbing together of the two surfaces. 5. The metric unit of work. A Newton-Meter. It is equal to the work done when moving an object with a weight of One Newton a distance of one meter. 6. A sense of weightlessness produced by a reduction in the g force which an individual feels. 8. The force of gravity which moves objects toward the center of the earth. It is an acceleration (32 feet per second squared) 11. A special type of curve used on roller coasters. It is made up of two different radii. 12. __________ G force. A force of less than normal gravity in which a person feels less than his normal weight. 13. Angular ____________. A measure of distance over time as an object travels in a circle.A measure of distance over time as an object travels in a circle. 16. Energy of motion 17. A push or a pull