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Across 4. the force that draws all bodies to earth's center 5. the capacity to do work. 9. A course file with sharp pointed prosections 10. the ability to withstand wear, pressure, or damage. 11. A straight line passing from side to side of any figure or body 12. Physical power or strength 13. A one-of-a-kind, pre-production version of a product. Used to test for design flaws so they can be corrected before the product is mass produce 14. CO2 race car where the wheels are on the outside of the car 15. a rod on which a wheel turns 19. Heavy paper coated on one side with sand or the other abrasive material and used for smoothing surfaces 20. Maximum rate of travel 25. Force acting on a body is equal to the acceleration of that body times it's mass 26. Describing an object's visual appeal or attractiveness 28. Set of very specific requirements for a project or competition, often including a set of measurements 29. A drill in which the bit is pressed to the material by a hand lever 30. Drawing shows real objects to a certain amount 34. A small, sealed, metal tube that contains compressed carbon dioxide. CO2 cartridges are used to propel race cars down the track 35. CO2 car with external wheels and a triangular shape. 37. A body of coherent matter(weight) 38. A small, quick sketch used to rapidly communicate ideas 43. Force that resists an object's movement through the air. The more the object disrupts the laminar flow of air around it, the more drag is developed 44. A straight, layered flow of air that is free of turbulent motion 45. A special type of file 46. Property of an air stream moving in a swirling or tumbling fashion 47. Heaviness or mass

Down 1. Property of matter 2. To have balance, or to have the same shape or size on opposite sides. 3. Force or speed of motion 6. Aerodynamic force that pushes upward on a body as it moves through an airstream. Airplane wings generate lift 7. Increase of speed or velocity 8. Drill with trust 9. Measure of the center of the wheel to the other center of the wheel 16. Turbulent flow of air that moves in a random tumbling, or circular, pattern 17. the rate of movement or motion 18. A rough design 20. An acceptable variance from a specified measurement. Used to determine the minimum and maximum measurements 21. A wood screw with its end bent into a loop 22. And object in motion will stay at motion, and an object at rest will stay at rest 23. CO2 design where all wheels are inside the car 24. The act of slowing a moving object. In CO2 racing, a car must be safely decelerated after it crosses the finish line 25. Every action, there is an equal and opposite action 27. The properties and forces produced as an object moves through the air, or a stream of air moves around an object 31. A measurement of force per unit of area. In a sealed CO2 cartridge, pressurized carbon dioxide gas exerts an equal force in all directions to the inner surfaces of the cartridge 32. the last drawing, it has all the details and is drawn to perfection 33. Surface resistance to relative motion 36. Structural frame of a car and determines the size and mounting position of the parts 39. Force that propels an object, sets it into motion, or keeps it moving. 40. The amount of physical space occupied by an object or substance 41. Half diameter 42. A force that tends to rotate, twist, or turn things