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32 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are the three things you are doing for your exams? |
Newtons Law, balance and stability, force summation |
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Name the 3 newtons laws |
Law of Inertia, Law of acceleration, law of reaction |
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Define law of reaction |
For every action there is an equal and opposite reaction |
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Define law of inertia |
A body at rest will stay at rest or a body moving with a constant speed will continue in that state unless acted upon by an external force. |
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Define Law of acceleration |
The acceleration of a body is proportional to the force applied and takes place in the direction in which the force acts. |
The acceleration... and takes |
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Law of inertia novice rider |
Novice riders will travel slower as the force acting upon it is braking. Less likely to avoid roots. More likely to go on tracks that are smoother as well so less force acting against them as well. |
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Law of acceleration advanced rider |
Clip in pedals mean that you can lift the pedals up using your quadriceps and rectus abdominals as well as pushing them down. Standing up also applies more force. |
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Law of inertia advanced rider |
Smooth and well timed braking means that you don't jam on brakes and apply more force than you need too. |
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Law of acceleration novice rider |
Pedalling stays the same, your mass remains constant |
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Law of reaction novice rider |
Action is pushing the pedal, reaction is chain moving. Action is braking, reaction is slowing down. Action is obstacles, reaction is poor bike control. Action is different surfaces, reaction is change of speed |
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Law of reaction advanced rider |
Able to read situations and adjust accordingly. Adjust tire pressure according to surface. |
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Define Balance and stability |
An objects ability to maintain a stable position |
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Define Balance and stability |
An objects ability to maintain a stable position |
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Balance and stability novice rider |
Has training wheels (wider base of support and more points of contact) sits down to get more points of contact. Keeping their feet equal on the pedals means compensating your weight. Keeping low also means a lower centre of gravity |
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Define Balance and stability |
An objects ability to maintain a stable position |
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Balance and stability novice rider |
Has training wheels (wider base of support and more points of contact) sits down to get more points of contact. Keeping their feet equal on the pedals means compensating your weight. Keeping low also means a lower centre of gravity |
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Balance and stability advanced rider. |
Elbows and knees compensate - decreasing the chance of falling off when going over jumps. Stand up - increase centre of gravity(less stable but then can do more things / manoeuvre better). Line of gravity - moves Forward when climbing and lean back when descending. |
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Define Balance and stability |
An objects ability to maintain a stable position |
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Balance and stability novice rider |
Has training wheels (wider base of support and more points of contact) sits down to get more points of contact. Keeping their feet equal on the pedals means compensating your weight. Keeping low also means a lower centre of gravity |
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Balance and stability advanced rider. |
Elbows and knees compensate - decreasing the chance of falling off when going over jumps. Stand up - increase centre of gravity(less stable but then can do more things / manoeuvre better). Line of gravity - moves Forward when climbing and lean back when descending. |
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Define force summation |
The combination of forces produced by different parts of the body |
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Define Balance and stability |
An objects ability to maintain a stable position |
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Balance and stability novice rider |
Has training wheels (wider base of support and more points of contact) sits down to get more points of contact. Keeping their feet equal on the pedals means compensating your weight. Keeping low also means a lower centre of gravity |
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Balance and stability advanced rider. |
Elbows and knees compensate - decreasing the chance of falling off when going over jumps. Stand up - increase centre of gravity(less stable but then can do more things / manoeuvre better). Line of gravity - moves Forward when climbing and lean back when descending. |
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Define force summation |
The combination of forces produced by different parts of the body |
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Force summation novice rider |
Legs only, 3/4 leg action due to lower seat. Easy as the bike does it for you - you remain seated. |
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Define Balance and stability |
An objects ability to maintain a stable position |
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Balance and stability novice rider |
Has training wheels (wider base of support and more points of contact) sits down to get more points of contact. Keeping their feet equal on the pedals means compensating your weight. Keeping low also means a lower centre of gravity |
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Balance and stability advanced rider. |
Elbows and knees compensate - decreasing the chance of falling off when going over jumps. Stand up - increase centre of gravity(less stable but then can do more things / manoeuvre better). Line of gravity - moves Forward when climbing and lean back when descending. |
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Define force summation |
The combination of forces produced by different parts of the body |
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Force summation novice rider |
Legs only, 3/4 leg action due to lower seat. Easy as the bike does it for you - you remain seated. |
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Experienced rider force summation |
Arms and legs. By standing up you are using your whole body. Arms and legs - clip in shoes hamstrings. Legs are almost fully extended |
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