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Biomechanics Test 3
n/a
80
Science
Undergraduate 3
11/25/2013

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Term
Kinematics
Definition
Linear ______________ includes the description of linear motion involving position, velocity, and acceleration.
Term
Pythagorean Theorem
Definition
Which theorem is representing this equation: a^2 + b^2 = c^2
Term
Frames
Definition
High-speed video cameras can operate at greater ________ per second compared with regular video cameras.
Term
The direction
Definition
What is the difference between a vector and a scalar?
Term
Displacement
Definition
delta s = sf – si represents the ______________
Term
A, B, E
Definition
Identify the positive slopes
Term
D, the acceleration is zero
Definition
What does the zero slope mean?
Term
Instantaneous
Definition
____________ velocity is very different from ordinary velocity, and is defined at an instant of time.
Term
Change of position
Definition
Velocity is called the derivate of _____ and time
Term
Velocity
Definition
__________ is the integral of the acceleration.
Term
Walk and run
Definition
The most studied forms of human gait are __________ and ___________.
Term
Stride length and rate
Definition
Which are the most common parameters of stride?
Term
Hill
Definition
The mathematical model to represent the velocity curve was proposed by _________.
Term
Top; the velocity was more constant
Definition
Which of those sprinters was the winner?
Term
Instant of release
Definition
The point at which an object becomes a projectile is ______________.
Term
Projection, angle, height, velocity
Definition
Factors including projectiles:
Term
Initial, final
Definition
Projectile height is equal to ____________ - ____________.
Term
Trajectory is asymmetric
Definition
When projection height is positive, it means that ______________.
Term
0
Definition
The projection height in this graph is _____________.
Term
Constant or uniform
Definition
The projectile motion in the horizontal component is ____________.
Term
Acceleration and gravity
Definition
The uniform accelerated motion has a constant ____________.
Term
Vertical
Definition
These equations serve to calculate in the ____________ component of the projectile motion: Vf^2 = Vi^2 + ½ at s = Vi + ½ at^2
Term
Two lines and two planes
Definition
An angle is formed by _____________.
Term
2 pi
Definition
1 revolution is equal to ___________ radians
Term
pi
Definition
180deg is equal to ____________ radians.
Term
Arm, trunk, thigh, leg
Definition
Which type of angles are these?
Term
Joint
Definition
Relative angles are known also as ________ angles.
Term
The first
Definition
Which of these equations is wrong: hip = trunk - thigh ; knee = thigh - leg ; ankle = leg - foot + 90deg
Term
35deg
Definition
Angular displacement is equal to _____________.
Term
105deg
Definition
Angular distance is equal to _____________.
Term
w
Definition
Angular distance is equal to _____________.
Term
Tangential
Definition
Linear velocity during angular motion is also called _____________ velocity
Term
Centripetal
Definition
What are the types of linear acceleration in angular motion?
Term
Centripetal
Definition
This equation serve to calculate ____________ acceleration: a = v^2/r
Term
Angle-angle diagram
Definition
Which type of diagram is this?
Term
Time intervals
Definition
What are representing the marks along the curve?
Term
Vector
Definition
Forces are ________ and have characteristics such as magnitude and direction.
Term
Match:
Law 1 = Law of Inertia
Law 2 = Law of acceleration
Law 3 = Law of acceleration- reaction
Definition
Match:
Law 1 = Law of Inertia
Law 2 = Law of acceleration
Law 3 = Law of acceleration-reaction
Term
Match:
Law 1—If F = 0 then v = 0
Law 2—F*t = m*v
Law 3—Fa on b = Fb on a
Definition
Match:
Law 1—If F = 0 then v = 0
Law 2—F*t = m*v
Law 3—Fa on b = Fb on a
Term
Non-contact
Definition
_________ forces act at a distance.
Term
Gravity
Definition
____________is the force that causes the objects to fall down to the earth.
Term
Universal gravitational constant
Definition
In the equation of the “law of gravitation,” G=____________?
Term
Gravitational constant
Definition
When the m1=mass of the earth, and r=distance between the object and the center of the earth, G*m1/r^2 = _________________?
Term
Name 3 contact forces:
1. Ground reaction
2. Joint reaction
3. Friction
Definition
Name 3 contact forces:
1. Ground reaction
2. Joint reaction
3. Friction
Term
Friction
Definition
______________force acts parallel to two surfaces that are in contact during the motion.
Term
Coefficient friction
Definition
The force of friction is proportional to the normal force between that surfaces where  is the ______________.
Term
False, s >
Definition
True or false? s = k
Term
1. Drag
2. Lift
Definition
Fluid resistance can be resolved in two components:
Term
Opposite/against
Definition
Drag is the component of the fluid resistance that always acts _________ the motion.
Term
1. Pressure
2. Humidity
3. Temperature
Definition
Density is affected by:
Term
Laminar
Definition
This is a ____________ flow
Term
Boundary layer
Definition
When an object moves through a fluid, the fluid interacts with the surface of the object. The resulting fluid layer is called the ______________.
Term
Form
Definition
The drag resulting from the pressure differential is called _____________ drag.
Term
Lower
Definition
The lift component acts perpendicular to the direction of the motion towards the side of ___________ pressure.
Term
Momentum (angular or linear) refers to _____________.
Definition
Momentum (angular or linear) refers to _____________.
Term
Momentum
Definition
The greater the impulse, the greater the ___________.
Term
Energy in a system does not enter or leave the system.
Definition
Law of conservation:
Term
Pressure
Definition
The concept of ____________ is used to describe force distribution.
Term
Bimodal
Definition
The vertical component of both walking and running linear kinetics result in a _____________ shape graph.
Term
Running, walking
Definition
The magnitude of the GRF components for ___________ are much greater than for __________.
Term
Running
Definition
The green curve represents the _____________ gait.
Term
Similar
Definition
Modal peaks in the walking gait have _____________ magnitude.
Term
Passive peak
Definition
First modal peak during running gait is called _____________.
Term
Greater
Definition
The magnitude of the active peak is __________ than the passive.
Term
Rotational force, momentum
Definition
Torque is also called _____________.
Term
Force x Radius
Definition
Mathematically, torque is _____________.
Term
Moment arm
Definition
T = F x r r is referred to as a _______________.
Term
Greater
Definition
To produce the same torque, A has to apply a force ________ than B
Term
Moment of inertia
Definition
I = m x r^2 is the equation for the __________ of _________.
Term
Law I—If T=0 then =0
Law II—T*t = I*v
Law III—T a on b = T b on a
Definition
Term
describes the quantity of Inertia
Definition
Moment of inertia is:
Term
Faster and easier
Definition
When the mass distribution is closer to the axis of rotation, it has to be _________ to overcome the inertia.
Term
Length
Definition
Moment of inertia can change by modifying _______ of the segments.
Term
T = I(aplpha)
Definition
The equation for the law of angular acceleration is:
Term
Local momentum
Definition
Name the angular momentums of a segment.
Term
First class
Definition
Lever trying to wedge a rock out of a hole, sitting on a fulcrum is what kind of lever?
Term
Mechanical advantage
Definition
The mechanical effectiveness of a lever may be evaluated by ______________.
Term
Effort, resistance
Definition
Mechanical advantage is defined as the ratio of the ___________ arm to the ________ arm.
Term
4
Definition
Mechanical advantage (MA) on a third-class lever results in MA ___________ 1.
Term
2nd
Definition
The _____________ class lever magnifies the effort force.
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