Term
| What are the characteristics of a force? |
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Definition
- Vector magnitude and direction
- (Angle)
- Point of application
- Line of application |
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Term
| What is Newton's First Law? |
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Definition
| Every body continues in its state of rest or of uniform motion in a straight line, unless it is compelled to change that state by external forces impressed upon it. |
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Term
| What is Newton's Second Law? |
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Definition
| A force applied to a body will cause acceleration of that body of a magnitude proportional to that force, in the direction of that force, and inversely proportional to that body's mass. |
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Term
| What is Newton's Third Law? |
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Definition
| For every action, there is always an opposite and equal reaction. |
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Term
| What is the Law of Conservation of Momentum? |
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Definition
| In a system of bodies that exert forces on each other, the total momentum in any direction remains constant unless some external force acts on the system in that direction. |
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Term
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Definition
These are forces that result from the interaction of two objects:
- Ground Reaction Force (GRF)
- Joint Reaction Force
- Friction
- Fluid Resistance
- Inertial Force
- Muscle Force
- Elastic Force |
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Term
| Describe Bernoulli's Principal. |
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Definition
Pressure is inversely proportional to Velocity.
Air has to travel further over the top of the airfoil, hence greater velocity and less pressure. |
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Term
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Definition
| The force exerted due to the movement (inertia) of a body. |
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Term
| What are scalar quantities? |
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Definition
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Term
| When does conservation of energy apply to human movement? |
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Definition
| When an object is a projectile with negligible air resistnace (TE = PE + KE) |
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Term
| What is conservation of energy? |
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Definition
| This is when the total energy (of a closed system) is constant. (Energy doesn't enter or leave.) |
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