Evaluate the strengths and weaknesses of your chosen skill.

Look at 3 biomechanical principles

Task 2

Stability / Projectile Motion / Force Summation / Levers /

Newton’s LawsStrengths

Weaknesses

Watch this you Tube of a tennis serve

• What are the strengths– Wide base of support– Good force summation

• What are the weaknesses• Newton’s 2nd Law• Projectile Motion

Strengths

• Look at your initial performance • What did you do well• What was successful for you

Weaknesses

• What went wrong• What can you focus on for your practice

sessions• This is what your practice sessions should be

focused on.

Words that you might use for the biomechanical term Stability

• Centre of gravity• Base of support• Balance• Line of gravity• Stability• Principle #3 page 64• Principle #4 page 64

Force summation

• Sequencing of body segments• Generate maximum momentum• Large muscle groups• Small muscle groups• Stretching out• Full range of motion

Projectile Motion

• Speed of release• Projectile• Angle of release• Optimum angle is 45° is this what you want

for your skill though??? Think what would be best for your skill. Quest 4 page 78

• Height of release

Newton’s Laws1st law force

2nd law direction

3rd law Equal and opposite

mass Reaction force

inertia Initial force

acceleration increases

Levers

• 3rd class levers• Longer the lever• Wide range of motion• More velocity / speed• Strike• Generate