Across
- 1. Power of a device that does 210J of work in 5 hours
- 3. amount of simple machines
- 4. power is the ____ at which you do work
- 6. unit for distance
- 7. a crowbar is an example of this simple machine
- 9. unit that the US measures weight in
- 11. work put into the machine
- 15. 1 ________ is equal to 746 Watts
- 18. a weight of 196Newtons is ____ kilograms
- 20. unit for work
- 22. devices that change the direction and size of a force
- 23. a ramp is this simple machine
- 24. work is only done if an object is in_____
- 25. because its measured in Joules, work is considered to be___
- 26. product of force and distance
Down
- 2. a mass of 15kg would have a weight of___ pounds
- 3. work done by a 35N object that went 2 meters is ___J
- 5. work done by the machine is always ___ that work done on the machine
- 8. efficiecy of a machine that put 40J when 50J was applied =__%
- 9. efficiency is measured as a ___
- 10. the reason a machine's efficiency is never 100%
- 12. SI unit for gravity and force
- 13. devices made from 2 or more simple machines are ___ machines
- 14. how well a machine performs
- 16. work that the machines applies
- 17. screws, wheels, and pulleys are examples of __machines
- 19. machines exist to make work______
- 21. unit of measurement for power