Across
- 2. motion with constant speed
- 4. an astronomer who proved periodic motion of pendulum
- 6. movement of pendulum
- 8. fastest land running animal
- 9. a group of consecutive seven days
Down
- 1. an event occurring at regular intervals of time
- 3. CGS unit of length
- 5. an old method of measuring time
- 7. one-sixtieth part of a minute