Across
- 4. nature of the surface with less friction
- 6. a kind of friction when a body slowly moves over the surface of the another object
- 7. metal balls used between moving parts of the machine
- 9. friction reduces ________ of machines.
- 10. friction _________ motion.
- 11. a kind of friction when a body tends to start moving
Down
- 1. a body moving on the ground slows down gradually due to this force
- 2. the smallest type of friction
- 3. pointed shaped body to reduce friction
- 5. oil and greese are commonly used as _______.
- 8. the nature of the surface with more friction