Motion

2. pair the forces two objects apply to each other.
3. a measure of the distance an object travels in a given amount of time.
6. a measure of the change in velocity during a period of time.
8. an object’s distance and direction from a reference point.
12. force the combination of all the forces acting on an object.
13. a quantity that has both magnitude and direction.
14. an attractive force that exists between all objects that have mass.
15. force a force that one object applies to another object without touching it.
18. a push or a pull on an object.
21. the difference between the initial, or starting, position and the final position.
22. force the force that pushes perpendicular to the object’s surface.

1. first law of motion an object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object.
2. diagram a simple model to understand what will happen to an object due to a force.
4. contact force that resists the sliding motion of two surfaces that are touching.
5. the speed and the direction of a moving object.
7. point the starting point you choose to describe the location, or position, of an object.
9. third law of motion when an object applies a force on another object, the second object applies a force of the same strength on the first object but the force is in the opposite direction.
10. second law of motion law that states that the acceleration of an object is equal to the net force exerted on the object divided by the object’s mass.
11. the gravitational force exerted on an object.
16. force a push or a pull on one object by another object that is touching it.
17. the process of changing position.
19. a region of space that has a physical quantity (such as a force) at every point.
20. collision when colliding objects bounce off each other.