Across
- 1. for an ellipse, one of two points located on the long axis
- 3. obtain a result from a different source
- 6. blocking of light from one object by another relative to an observer
- 8. having limits or being restricted
- 9. capable of putting an object in motion
- 10. part of a circle
- 12. speed at a particular moment of time
- 13. speed measured over a period of time
- 15. distance traveled divided by time
- 17. falling motion of an object that is subject only to the force of gravity
- 18. a closed curve that looks like a flattened circle
- 20. path followed by a projectile
Down
- 2. of light, 3.0 x 1^8 m/sec (300 million meters per second) or 186 000 mi/sec
- 4. capacity to make a change in matter (to heat to move or to change its physical form)
- 5. speed and direction of an object’s motion
- 7. a ramp or flat surface tilted from the horizontal
- 11. anything that occupies space and has weight
- 14. an observation under controlled conditions
- 16. having to do with the Sun, Moon, stars and the appearance of the night sky
- 19. force of attraction between two bodies; the force of attraction between a freely falling object and the earth gives the body an acceleration of 32 ft/sec2