Questions 3 Flashcards
What is the formula for acceleration?
Force = Mass x Acceleration
The rules or principles of arthrokinematic movements tells us that if a convex joint surface moves on a concave joint surface; then?
The convex surface rolls in the opposite direction from its slide on the concave joint surface
What is kinesiology?
Study of the forces and structures (active and passive) that are involved in human movement?
What is kinematics?
The study of motion of bodies in space
What is Kinetics?
The study of forces on a body
What is motor control?
How the various body systems interact to produce movement, with emphasis on how the brain manages the movement?
What are the formulas for Torque?
Torque = internal force x internal moment arm Torque = External force x external moment arm Torque = Force x Distance
Combining two or more forces to determine what the resultant force will be?
Composition of forces or vector composition
Can sometimes be accomplished by the polygon or tip tail method?
Composition of forces or vector composition
Decomposing a single force into its component forces?
Resolution of forces or vector resoultion
Rotation kinematic describes?
The motion of a part in a circular path around an axis
Which of the following are correct formulae for mechanical advantage?
Mechanical advantage == force out the lever / force applied to the lever
Mechanical advantage = internal moment arm/ External moment arm
Mechanical advantage = force arm/resistance arm
What is tension?
A distraction force that pulls a material apart
Tissue returns to its original shape and size after the force is removed?
Elastic region
Tissue remains permanently deformed after the force is removed?
Plastic region
Also known as the trauma range?
Plastic region
Next to the toe or neutral zone
Elastic region
Which of the below is a correct definition for a force couple?
Two or more linear forces in different directions produce torque or rotation in the same direction.
What is kinetics?
Forces on the body
Magnitude of the force is?
Length of the vector shaft
Point at which the force is applied to the body?
Base of the vector
Direction of the force?
The arrow at one end of the vector
A muscle is trying to shorten get shorter?
Concentric
Internal torque > External torque
Concentric
A muscle that is trying to shorten actually lengthens?
Eccentric
External torque > Internal torque
Eccentric
A muscle that is trying to shorten stays the same length?
Isometric
Internal torque = External Torque
Isometric
