Biomechanics

3. Newton's ____ law states that mass times acceleration equals the force of an object.
7. Muscles only ____, they do not push
8. Body movement that is changing accelerating.
10. what type of stress is a frictional force
12. one force people often forget about that is being applied from the ground up is ____
13. Newton's ____ law states that objects in motion will remain in motion unless acted on by another force.
15. what type of stress is a lengthening in the direction of the force
18. When the length of the force arm divided by the length of the resistance force is less than one a mechanical _______ is present
20. A lever system where the resistance arm is in the middle between the fulcrum and force, always mechanical advantage.

1. cause of the movement
2. what type of stress is a shortening in the direction of the force
4. the description of a movement
5. Newton's _____ law states that there is an opposite and equal reaction for every action.
6. A lever system which the resistance arm and the force being applied are on two different sides of the body.
9. ____ is the property that allows an object to resist the change in motion.
11. The rotary effect of a force
14. A lever system where the force is in the middle between the fulcrum and resistance arm.
16. Body movement that is at resting or constant acceleration.
17. When the length of the force arm divided by the length of the resistance force is greater than one a mechanical _______ is present
19. The ____ is a fixed point that a lever system rotates around.