Physics: Unit 2 Vocab

2. 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
5. 3.0 x 1^8 m/sec (300 million meters per second) or 186 000 mi/sec
7. a closed curve that looks like a flattened circle
10. an observation under controlled conditions
13. speed at a particular moment of time
16. part of a circle
18. for an ellipse, one of two points located on the long axis
19. falling motion of an object that is subject only to the force of gravity
20. capable of putting an object in motion

1. speed measured over a period of time
3. a ramp or flat surface tilted from the horizontal
4. anything that occupies space and has weight
6. capacity to make a change in matter (to heat to move or to change its physical form)
8. obtain a result from a different source
9. having limits or being restricted
11. blocking of light from one object by another relative to an observer
12. having to do with the Sun, Moon, stars and the appearance of the night sky
14. distance traveled divided by time
15. path followed by a projectile
17. speed and direction of an object’s motion