Across
- 3. a property that determines how much force is required to change their motion; vector quantity; has magnitude and direction
- 4. total distance divided by the total time
- 7. the description of how things move; measures the positions, speed or velocity, and acceleration of objects
- 9. a positive scalar quantity; no direction associated with it
- 11. acts between the objects that are not touching; matter is not needed to transmit them; "action-at-a-distance" force
- 13. F
- 15. sum or difference of 2 or more vectors
- 16. perpendicular to
- 17. change in position that involves a distance and a direction
- 18. friction on an object moving through the air
- 21. unit of force
- 22. measure of a body's inertia (amount of matter in the object
- 24. a measurable quantity that has both a scalar value and a direction associated with it
- 25. a basic property of all matter; depends on the masses of the two objects and the distance between their centers
Down
- 1. a contact force that opposes the movement of objects past each other
- 2. rate of change of the speed or velocity during a given time interval
- 5. SI unit for mass
- 6. the gravitational attraction exerted on an object's mass by the earth
- 8. the rate of motion; scalar quantity
- 10. the property of a body by which it remains at rest or continues moving in a straight line unless acted upon by a directional force
- 12. a push or a pull on a system
- 14. the description of what causes things to move
- 15. compares the change in the value of a quantity to a certain span of time
- 19. any measurable quantity that can be completely described with a single piece of information; can be positive, negative, or zero
- 20. act only when one system touches another; caused by the attraction or repulsion of atom-sized particles; a.k.a. mechanical forces
- 23. rate of displacement; vector quantity