Biomechanical Principles of Motion Chapters 4 & 5

GLOSSARY WORDS Chapter 4  Biomechanics  Quantitative Analysis  Qualitative Analysis  General Motion  Linear Motion  Angular Motion  Distance  Displacement  Speed  Velocity  Torque  Acceleration  Eccentric Force  Angular Distance  Angular Displacement  Angular Speed  Angular Velocity  Angular Acceleration MUST BE COMPLETED ON FLASH CARDS BY NEXT TUESDAY 19 th MAY

Activity Think, Pair, Share 1. THINK What do you believe is Biomechanics? 2. SHARE with Person next to you 3. DRAW What you believe is Biomechanics 4. DISCUSS Classroom Discussion of Observations/Drawings

Biomechanics Is the science of studying living things from a ________________________ Physics of Human Movement Can help _______________ _________________

Biomechanical Analysis Quantitative Analysis __________ Data __________ Time Split Times _______________ Biomechanical Lab uses this to answer specific questions Qualitative Analysis _____________ ‘That was a good race’ ‘You were slow out of the blocks’ Coaches/Teachers/Trainers use this for feedback to students/athletes

Motion ______________involves __________ and _____________ at the same time Involves the ________________ of different body parts General Motion = ________ + ____________

Linear Motion Movement where all body parts are moving at the _______________________along a line, which may be curved or straight. Can describe by looking at __________, _____________, _________, ___________ and _______________ Uses Quantitative terms which can be measured/calculated

Distance/Displacement DISTANCE- _________________________ ________________. e.g. Running around 400m track DISPLACEMENT- change of position of a body e.g. Displacement is ____________________ ________________

Speed/Velocity SPEED- Time taken to cover a certain distance. Speed = VELOCITY- Time taken to change position. Has a size and direction Velocity = Measured in ______________- __/__

Acceleration ACCELERATION- Rate of change of velocity over time Acceleration = Can be _________ or __________ Measured in m/s 2 An Acceleration of 0 ______________that it has stopped, rather it is no longer speeding up or slowing down (constant velocity)

ACTIVITY Data Analysis – The 100m Sprint Page 70 of your Textbook TTT- Page 71

Peak Performance ALL Multiple Choice Questions WARM UP Q’s- 1,3,4,6,7,9 Training Q’s- 1,4,5,9 Game on Q’s- 2,4,5 DUE NEXT TUESDAY MAY 19 th HOMEWORK

Angular Motion Involves ______________________or fixed point Angular motion of the limbs of the body results in ______________of the whole body Axis of rotation can be _____, _______, ______, __________ We can use our knowledge of Angular motion and apply to distance, displacement, speed, velocity and acceleration

Torque _______________________ Caused by ________ forces on objects to rotate and move forward around an axis TORQUE = _______ X __________ Lever arm- perpendicular distance form axis of rotation to line of action of force The __________ the torque, the ________ angular acceleration

Angular Distance/Displacement ANGULAR DISTANCE- Sum of all the _________ changes the body undergoes eg. Gymnast does 1 ½ body rotations = 360° + 180°= 720° ANGULAR DISPLACEMENT- difference between the ________ and the _______ angular position of a rotating object. eg. Gymnast does 1 ½ body rotations = Angular Displacement of 180°

Angular Distance/Displacement

Angular Speed/Velocity ANGULAR SPEED= ANGULAR VELOCITY- Rate of Change of Angular Displacement over time. = Both are measured in ________ per ________

Relationship between Linear & Angular Velocity LINEAR VELOCITY= _____________ x ________________ Ho

Angular Acceleration ______________ of angular velocity Can be POSITIVE, NEGATIVE or ZERO Acceleration = Measured in °/s 2 An Angular Acceleration of 0 does not mean that it has stopped, rather it is no longer speeding up or slowing down (________________)