Across
- 7. rubbing force; always slows an object down
- 10. amount of force applied per unit area on a object’s surface; the units are Pa
- 11. caused by the microscopic roughness of two surfaces moving past each other
- 12. a push or pull
- 13. the law that states: total momentum of objects that collide with each other is the same before and after a collision
- 15. Newton’s ______ law states that objects at rest will remain at rest; object in motion will remain at a constant velocity unless a force is applied
- 16. gravitational force between an object and the Earth
- 20. when force of gravity is balanced by air resistance
- 22. a measure of how difficult it is to stop a moving object; mass x velocity
- 24. speed and direction of a moving object
- 26. occurs between the ground and the part of a tire touching the ground while moving
- 27. Newton’s _______ law states that an object acted upon by a net force will accelerate in the direction of the force
- 28. amount of matter in an object
Down
- 1. states that when the speed of a fluid increases, the pressure exerted by the fluid decreases
- 2. states that the pressure applied at any point to a confined fluid is transmitted equally throughout the fluid
- 3. combination of all forces acting on an object
- 4. caused by the attraction between the atoms on two surfaces that are in contact
- 5. how far something has moved
- 6. upward force exerted by a fluid on any object placed in the fluid
- 8. uses a fluid to increase an applied force
- 9. the buoyant force on an object equals the weight of the fluid displaced by the object
- 11. rate of change of position; distance traveled divided by time
- 14. units for force
- 17. the force that attracts all objects to each other
- 18. liquid or gas; flows
- 19. rate of change of velocity; change in speed divided by time
- 21. tendency of an object to resist change in its motion
- 23. Newton’s ______ law states that forces always act in equal but opposite pairs
- 25. mass divided by volume