Across
- 3. force that works against the effort
- 7. a grooved wheel with a chain or rope wrapped in the groove
- 9. flat, slanted surface
- 11. the spot where a bar turns or pivots on a lever
- 13. determined by dividing the distance an object travels by the time it takes the object to travel that distance
- 16. an object that makes work easier by strengthening the force used to do the work or changing the direction of the applied force
- 17. force that resists the movement of objects against each other
- 18. the change of an object's position
- 19. the pull of one object on another
- 21. Newton's ___ law of motion states that force is equal to an object's mass and the acceleration of an object
- 23. Newton's ___ law of motion, sometimes called "the law of action and reaction," says that when one object exerts a force on a second object, the second object reacts by exerting an equal force back on the first object
- 24. inclined plane wound around a cylinder or cone
- 25. consists of a wheel and rod, or axle, running through the wheel
- 27. distance an object moves over a given amount of time
Down
- 1. Newton's ___ law of motion says that an object tends to stay at the same velocity unless force causes it to change
- 2. the ability to make something move
- 4. decrease in effort that is needed to move an object
- 5. resistance to a change in motion
- 6. two inclined planes placed back-to-back
- 8. change in velocity during a period of time
- 10. the mass and velocity of an object determine its ___
- 12. any bar that turns on a point
- 14. unit in which force is measured
- 15. combines multiple fixed and moveable pulleys
- 20. fixed/unmoving object or location
- 22. unit used to measure work
- 26. a push or a pull