Across
- 3. Law of Motion - If an object exerts a force on another object, the second object exerts an equal force in the opposite direction on the first object.
- 4. friction- friction that occurs when an object rolls over a surface
- 9. - A change in an object's speed or direction.
- 11. friction-friction that occurs as an object moves through a fluid
- 13. the amount of matter in an object
- 15. Law of Motion - an object at rest will stay at rest unless acted on by a force, and an object in motion will stay in motion unless acted on by a force.
- 16. the force that two surfaces exert on each other when they rub against each other.
- 17. First Law of Motion- objects at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an unbalanced force
- 18. the tendency of an object to resist any change in its motion
- 19. the force of gravity on an object at the surface of a planet
Down
- 1. an object that is thrown
- 2. fall-the motion of a falling object when the only force acting on it is gravity
- 5. of Conservation of Momentum- The total momentum of any group of objects remains the same, or is conserved, unless outside forces act on the objects.
- 6. the attractive force between objects, its strength depends on their masses and the distance between them
- 7. - An object's speed and direction at a specific instant in time.
- 8. Law of Motion - acceleration depends on an objects mass and the force acting on the object. Acceleration = mass/force or force =mass x acceleration
- 10. Second Law of Motion- acceleration depends on the object’s mass and on the net force acting on the object.
- 12. friction- friction that acts on objects that are not moving
- 14. friction-friction that occurs when one solid surface slides over another
- 16. a push or a pull on an object