Across
- 3. opposes motion, generates heat
- 6. ratio of the adjacent to the hypotenuse
- 8. a right angle
Down
- 1. caused by or related to gravity
- 2. ratio of useful work to total input energy
- 4. this is the unit of work
- 5. rate at which work is done
- 7. product of the force and distance moved in the direction of the force