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  1. #1
    Join Date
    Nov. 13, 2010
    Posts
    84

    Default how far would a horse's jump span be over a 4'9" jump

    about, i was just curious and needed to know for a math assignment. from take off to landing would it be about 9 feet? or more?



  2. #2
    Join Date
    Feb. 3, 2000
    Location
    Nokesville, VA
    Posts
    35,327

    Default

    At that height, there will be quite a lot of variability, but I think the average would be 10 - 13 feet.

    I once managed the takeoff distance to an Advanced cross country fence, and they ranged from 3 ft to 17 feet. So there will be a lot of variability among horses.
    Janet

    chief feeder and mucker for Music, Spy, Belle and Tiara. Someone else is now feeding and mucking for Chief and Brain (both foxhunting now).



  3. #3
    Join Date
    Jul. 2, 2003
    Location
    Woodland, Ca
    Posts
    6,257

    Default

    It depends on the speed at which the horse approachs the jump. According to d'Endrody Give Your Horse a Chance at 4'6" Your take off would be between 5'3" (at 350 yd/min) and 6'5" (at 492 yds/min) and your landing would would be between 6'3" and 7'11"... so that's 11'6" to 14'4". There is also a foot note that says that with a single fence (as opposed to one in a combination) the distance can be increased by 25%. He then goes on to talk about the effect of oxers of various heights and of the position of the ground line.



  4. #4
    Join Date
    Jul. 10, 2001
    Posts
    6,723

    Default

    The variability in the answer is because once the horse has taken off the flight is ballistic (y = Voy t - .5 g t^2 for the vertical component and x=Vox*t for the horizontal component). In other words, a horse now has vertical and horizontal speed, no longer just horizontal speed.

    Not knowing your age or level of education makes helping you find an answer difficult. I will suggest you look up ballistic flight and use your fence height combined with a series of canter speeds (Vo) such as 250 meters per minute, 350 meters per minute, 450 meters per minute and 550 meters per minute (all common speeds found when jumping) and you will see that there is no one set distance. Of course you can not just plug and chug these numbers, be careful of the units!



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