Across
- 2. s=d/t
- 4. electromagnetic radiation with wavelengths longer than those of visible light.
- 5. speed=distance/time
- 6. x-rays
- 7. change in some quantity or difference in something
- 10. average position of the force of gravity on an object.
- 11. the throwing back by a body or surface of light, heat, or sound without absorbing it.
- 14. SI base unit of length
Down
- 1. the opposite of acceleration
- 3. how far abject's points are
- 8. change in velocity
- 9. when a object changes positions
- 12. third letter in the Greek alphabet
- 13. a push or pull