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# How does the length of the runway affect the distance traveled by a ski jumper? watch

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1. This is my answer, could anyone check it to make sure it makes sense or add to it?? Thanks

The length of the runway is a factor which affects the distance travelled by the jumper since, when the length of the runway is longer, gravity allows the skier to accelerate down the hill. The longer the runway, the longer the skier is accelerating downhill meaning the velocity of the skier increases since gravity is acting on the skier for longer. Objects fall at an increasing speed until they reach their terminal velocity which is their fastest speed since air resistance and mass are equal at the point of terminal velocity, skiing requires computational fluid dynamics which the object is moving at its terminal velocity if the speed is constant from the force exerted by the fluid whilst it’s moving.
2. (Original post by Britster.for)
This is my answer, could anyone check it to make sure it makes sense or add to it?? Thanks

The length of the runway is a factor which affects the distance travelled by the jumper since, when the length of the runway is longer, gravity allows the skier to accelerate down the hill. The longer the runway, the longer the skier is accelerating downhill meaning the velocity of the skier increases since gravity is acting on the skier for longer. Objects fall at an increasing speed until they reach their terminal velocity which is their fastest speed since air resistance and mass are equal at the point of terminal velocity, skiing requires computational fluid dynamics which the object is moving at its terminal velocity if the speed is constant from the force exerted by the fluid whilst it’s moving.
Very well worded, though I would suggest you talk about weight rather than mass when considering the force exerted by air resistance against the weight resulting from gravity. Although the mass of the person does affect the terminal velocity, it is the weight (force) of the mass that is equalised by the air resistance at terminal velocity.
3. Have skiied for decades and never used computational fluid dynamics. You would be better saying that one could use computational fluid dynamics to predict the distance traveled. Also you reference terminal velocity but fail to say that this means that there will be a point beyond which ramp length makes no difference.
4. (Original post by earthworm)
Have skiied for decades and never used computational fluid dynamics. You would be better saying that one could use computational fluid dynamics to predict the distance traveled. Also you reference terminal velocity but fail to say that this means that there will be a point beyond which ramp length makes no difference.
Hadn't thought of the ramp becoming irrelevant!! Thanks so much ! x
5. (Original post by Mehrdad jafari)
Very well worded, though I would suggest you talk about weight rather than mass when considering the force exerted by air resistance against the weight resulting from gravity. Although the mass of the person does affect the terminal velocity, it is the weight (force) of the mass that is equalised by the air resistance at terminal velocity.
Thanks, really helped !! x

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Updated: October 28, 2015
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