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Biomechanical principles: Newton's laws of motion, force and the use…
Biomechanical principles: Newton's laws of motion, force and the use of technology
Newtons laws of motion
Newtons first law of inertia: 'A body continues in a state of rest or uniform unless acted upon by an external or unbalanced force.'
Newtons second law of acceleration: 'A body's rate of change in momentum is proportional to the size of the force applied and acts in the same direction as the force applied.'
Newtons third law of reaction: 'For every action force applied to a body there is an equal and opposite reaction force'.
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Calculations of force, momentum, acceleration and weight
There are 4 key concepts which can be calculated to build data and create a picture of performance:
- Velocity
- Momentum
- Acceleration
- Force
- Velocity = Displacement / time taken
- Momentum = mass x velocity
- Acceleration = (final velocity - initial velocity) / time taken
- Force = mass x acceleration (F=ma)
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