- acceleration: the change in velocity per unit time (ft/sec2 or m/s2)
- angular velocity: velocity measured in deg/sec
- compression: a smashing force created by at least two pushes
- distraction: separation of tissues in the body created by tensile forces
- first class lever: lever where the fulcrum is located between the force and the resistance
- force: mass x acceleration; a push or pull applied to an object or person, measured in pounds or Newtons
- free body diagram: drawings that show the forces placed on objects or people
- friction: a force that is parallel to a surface and resists movement
- linear velocity: velocity measured in ft/sec
- mass: the amount of matter contained in an object, measured in slugs or kilograms
- normal force: the force perpendicular to a surface that prevents an object from falling through the surface
- second class lever: lever where the force & resistance are on the same side of the fulcrum, but the resistance in closer to the fulcrum
- shearing: created by two opposing forces that are not in line with each other
- speed: displacement per unit time (ft/sec or m/s)
- tension/traction: created by forces pulling in opposite directions
- third class lever: lever where the force & resistance are on the same side, but the force in closer to the fulcrum
- torque: a force that creates rotational movement, =force x moment arm
- torsion: a twisting force, like wringing out a washcloth
- vectors: arrows drawn on a diagram to represent the location, magnitude, & direction of the force
- velocity: displacement per unit time in a specific direction
- weight: the force due to gravity exerted on a mass
Biomechanics