Across
- 3. resist changes in their state of motion
- 4. The state of a body or physical system at rest or in unaccelerated motion in which the resultant of all forces acting on it is zero and the sum of all torques about any axis is zero
- 5. a wheel with a grooved rim in which a rope, chain, or belt can run in order to change the direction or point of application of a force applied
- 9. A force that resists the relative motion or tendency to such motion of two bodies or substances in contact
- 10. a measure of how difficult it is to slide a material of one kind over another
- 14. The combination of all the forces that act on an object
- 15. the quantity of matter in a body regardless of its volume or of any forces acting on it
- 17. The combination of all the forces that act on an object
- 19. the natural force that causes things to fall toward the earth
Down
- 1. one of the simple machines, a plane surface inclined to the horizon, or forming with a horizontal plane any angle but a right angle
- 2. the friction that exists between two or several solid entities that are not moving relative to one another
- 6. Having little or no weight
- 7. the force of friction that allows you to provide less force to an object to keep it from moving or to make it move
- 8. an object's speed of motion will remain the same unless an outside force changes it
- 11. a diagram of all the contact and non-contact forces acting directly on a body
- 12. the pulling force exerted by a string, cable, chain, or similar solid object on another object
- 13. resistance caused by a gas to the motion of a solid body moving through it
- 16. the force of gravity on the object and may be calculated as the mass times the acceleration of gravity
- 18. Any force acting normal, to a surface, or perpendicular to the tangent plane