Across
- 2. a force past each other of objects that are touching; examples include rough surfaces and air resistance
- 5. a force acting on an object or system that originates outside of the object or system
- 9. the vector sum of all external forces acting on an object or system; causes a mass to accelerate
- 10. defined by the boundaries of an object or collection of objects being observed; all forces originating from outside of the system are considered external forces.
- 13. the pulling force that acts along a medium, especially a stretched flexible connector, such as a rope or cable; when a rope supports the weight of an object, the force on the object due to the rope is called a tension force.
Down
- 1. a push or pull on an object with a specific magnitude and direction; can be represented by vectors; can be expressed as a multiple of a standard force
- 2. a sketch showing all of the external forces acting on an object or system; the system is represented by a dot, and the forces are represented by vectors extending outward from the dot
- 3. the tendency of an object to remain at rest or remain in motion
- 4. a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force; also known as the law of inertia
- 6. the force that a surface applies to an object to support the weight of the object; acts perpendicular to the surface on which the object rests
- 7. for every action there is an equal, but opposite reaction
- 8. when an external unbalanced force acts on an object, that object will accelerate
- 11. the quantity of matter in a substance; measured in kilograms
- 12. the force due to gravity acting on an object of mass m; defined mathematically as: Fg=mg, where g is the magnitude and direction of the acceleration due to gravity