Save
or

or

taken

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

focusNode
Didn't know it?
click below

Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size     Small Size show me how

# Biomechanics

### Functional Anatomy

TermDefinition
3 forces acting on the body at all times 1. Gravity; 2. Ground reaction forces; 3. Muscular forces
impulse-momentum relationship the effect of a force over an interval of time
scalars described by magnitude only
vectors have a magnitude & a direction
vector resolution operation that replaces a single vector w/ 2 perpendicular vectors
biomechanics application of the laws, concepts, & tools of physics & engineering to various aspects of human motion; the how & the why of how we move
kinematics the study of bodies in motion with respect to space & time, without regard to the cause of the motion or the forces involved in the motion
establishing an origin usually at ground level, in a convenient location w/ respect to the motion studied, or at the center or corner of a force plate
moment a tendency for rotation; aka torque; indicates stress at joints
linear displacement change in position; direct distance from initial to final; a vector; net effect of motion
linear distance scalar value; length of the path
velocity vector; rate of change in position; how fast & in which direction is the movement occurring; displacement/time
speed scalar; how fast an object moves; distance/time
acceleration rate of change in linear velocity; change in velocity/change in time; measured in units of m/s^2
angular motion all parts of a body move through the same angle; same velocity, but each part of object is moving at a different speed.
angular distance the sum of all angular changes undergone by a rotating body
angular velocity the rate of change in angular position; angular displacement/time; measured in units of degrees or radians.
angular acceleration the rate of change in angular velocity; change in angular velocity/time; measured in units of degrees/sec or radians/sec
kinetics the how & the why behind a motion; the study of the forces that produce a motion
impulse force applied over time; =Ft (units N/s)
torque T= fd (product of F & the perpendicular distance from the F's line of acton to the axis); the angular equivalent of force; moment of force
center of mass point at which the sum of torques= 0
stress Force/unit of area over which the force acts
law of inertia an object at rest will stay at rest unless acted upon by an external force
law of acceleration F= ma (mass x gravity)
law of reaction for every action, there is an equal & opposite reaction
inertia a body's resistance to linear mass
moment of inertia a body's resistance to a change in angular motion; I= m (mass) x r^2 (radius^2)
angular law of acceleration torque; T= I (moment of inertia) x a (angular acceleration)
Created by: MeganFultz2

Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

• SPACEBAR - flip the current card
• LEFT ARROW - move card to the Don't know pile
• RIGHT ARROW - move card to Know pile
• BACKSPACE - undo the previous action

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
 "Know" box contains: Time elapsed: Retries:
restart all cards