When training for a hurdles event, it is crucial to have an even running tempo, so that the number of steps between hurdles can be calculated. If the hurdler "stutter-steps", or takes a series of smaller steps in the approach, he/she will lose momentum, and therefore the take-off speed after the hurdle will be slower, and the race ultimately lost.
The average take-off distance is six to seven feet from the base of the hurdles. By taking off a long way in front of the hurdles, it is possible to obtain a large range while maintaining a low vertical height. The hurdler lands approximately three feet (1 meter) past the hurdle, so maximum height must be reached before clearing the hurdle. This also ensures a faster take-off time, as there is less time in the air, where there is not horizontal velocity gained.
The motion of hurdling over the object is an example of projectile motion where a person will jump at a certain launch angle and land at that same angle on the other side of the hurdle. For hurdling, the smaller the angle of take off, the less time it will take to pass over the hurdle but also with a smaller angle comes a greater distance covered. One must make sure to reach a height over the hurdle but not too high over the hurdle that you gain "hang time" and lose a precious second.
Right before the hurdle your knees act like springs and compress a certain distance, build energy (this is called potential energy of a spring), and release it into kinetic energy over the hurdle. When landing, the springs that are your knees take the impact, conserve the energy once again, and release it towards your run.
The average take-off distance is six to seven feet from the base of the hurdles. By taking off a long way in front of the hurdles, it is possible to obtain a large range while maintaining a low vertical height. The hurdler lands approximately three feet (1 meter) past the hurdle, so maximum height must be reached before clearing the hurdle. This also ensures a faster take-off time, as there is less time in the air, where there is not horizontal velocity gained.
The motion of hurdling over the object is an example of projectile motion where a person will jump at a certain launch angle and land at that same angle on the other side of the hurdle. For hurdling, the smaller the angle of take off, the less time it will take to pass over the hurdle but also with a smaller angle comes a greater distance covered. One must make sure to reach a height over the hurdle but not too high over the hurdle that you gain "hang time" and lose a precious second.
Right before the hurdle your knees act like springs and compress a certain distance, build energy (this is called potential energy of a spring), and release it into kinetic energy over the hurdle. When landing, the springs that are your knees take the impact, conserve the energy once again, and release it towards your run.
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