Across
- 2. Weight is a measure of the force due to ___ acting on a mass.
- 8. Due to friction, the work put into a machine is always greater than the work ___.
- 9. A(n) ___ ___ is a device that makes work easier.
- 12. ___ impedes motion when two surfaces are in contact.
- 14. The unit for work.
- 16. You need more power to run up the stairs than to walk because it takes you less ___.
- 17. The greater the mass of the object, the ___ the force needed to achieve the same change in motion.
- 19. Simple machines can change the ___ at which the resistance moves.
- 20. For every force, there is an equal and ___ force.
- 23. The amount of work completed in a certain period of time is called ___.
- 27. As the net force increases, the ___ increases by the same proportion.
- 28. An axe is an example of a(n) ___.
- 29. Forces always occur in ___.
- 31. Your ___ is different on other planets because it changes with gravity.
Down
- 1. Mass is measured in ___.
- 3. A ramp is an example of a(n) ___.
- 4. The unit for power.
- 5. An object at rest will remain at rest and an object in motion will remain in constant straight motion unless acted on by a(n) ___ force.
- 6. A(n) ___ is a push or a pull.
- 7. Mass is the amount of ___ in a given substance.
- 10. Your ___ stays the same on other planets because it does not change with gravity.
- 11. A flagpole is an example of a(n) ___.
- 13. The unit for force & weight.
- 15. A hammer is an example of a(n) ___.
- 18. Simple machines change the ___ needed to make work easier.
- 19. A jelly jar top is an example of a(n) ___.
- 21. Forces can cause objects to move, ___ moving, change speed, or change direction.
- 22. A doorknob is an example of a(n) ___.
- 24. Simple machines can change the ___ or distance through which the force is applied.
- 25. If the total force on the object is not ___, its motion will change.
- 26. ___ is done when an object is moved through a distance in the direction of the applied force.
- 30. Forces cause ___.
