Science Movement & Acceleration

HUMAN MOVEMENT and ACCELERATION in the OLYMPICS

index

6. Acting forces

1. Throwing a javelin

7. How to imporve performance

2. Muscles and Bones

8. SOI

3. Ligaments and tendons

9. References

4. The 3rd class lever

5. Newton's laws of motion

Throwing a javelin

Here is what is seen exteranlly when throwing a javelin.

Bones and Muscles

Of the Human Arm

<- How are these bones and muscles involved in throwing a javelin?

Ligaments and Tendons

Of the Human Arm

<- How are ligaments and tendons involved in throwing a javelin?

The LEVER INVolved

In throwing a javelin

Which class of lever is involved in throwing a javelin? Which compents of the arm form the lever?

I accidently said 'effort' was first in a third class lever (it's 'facrum instead) but I cannot be bothered to re-rcord it all

1. A resting body will remain at rest and a body in motion will remain in motion unless it is acted upon an external force (such as air resistance or gravity).
2. The force acting on a body is equal to the mass of the object multiplied by its acceleration (F = m x a)
3. For every action there is an equal and opposite reaction.

Newton's laws of motion

Force, mass & acceleration

In a javelin throw

The mass of a female Olympic athelete's javelin = 0.6kgEstimated force exterted on the javelin = 700N A = F/M 700N / 0.6kg = 1166.66 m/s2

How to imporve

How can we utilize this knowledge to improve performance?

Statment of inquiry

This term's statment of inquiry: “The way that nature uses systems of force for movement inspires mankind to create machines and extend our abilities.”

Phylosophically, could the human body be thought of as a machine?

References

https://www.worldathletics.org/disciplines/throws/javelin-throw accessed 8.11.2022 http://speerschule.ch/docs/doc_ogiold.pdf accessed 8.11.2022 https://theconversation.com/science-of-the-spear-biomechanics-of-a-javelin-throw-29782 accessed 10.11.2022 https://evmed.asu.edu/blog/bodynotmachine#:~:text=However%2C%20the%20body%20is%20not,the%20mechanical%20complexities%20of%20machines. accessed 10.11 https://theconversation.com/science-of-the-spear-biomechanics-of-a-javelin-throw-29782 accessed 10.11.2022