Ask the athlete to answer how to master the rhythm of the 1000 meter constant speed run

I used to be a sports student, with a score of 2:03 in the 800 meters, a perfect score. The following is based on my own experience, I hope it will help you.

1. Control your weight, eat less staple foods at night, eat some vegetables and fruits, and you can lose your weight quickly;

2. Strength is the foundation of all sports, so strength training of the upper and lower limbs is essential, such as: push-ups, planks and other items, and you can also follow the above exercises with a fitness app such as a vest line, no more than half an hour a day.

3. When running, pay attention to the running rhythm and breathing mode, lean the center of gravity of the body slightly forward (the upper body can be tilted forward), and the feet naturally and briskly step forward.

Breathing adopts "two steps and one exhale, two steps and one inhalation" or "three steps and one exhale, three steps and one inhalation". Adjust according to personal habits. Running forward at an upper-medium speed is fine.

4. Don't test often when practicing, twice a week. Usually train for 1200-1500 meters, which is larger than the amount of the exam, and it would be better if you could stick to 2000+ to enhance your physical reserves.

Two steps, one exhale, two steps and one inhale, the step is big.

The process of completing the 100-meter silver book race can be simplified to a uniform acceleration exercise and a uniform speed exercise. In one race, athlete Feng Zhihong ran in 11 seconds, and the distance covered by the athlete in the second second of the acceleration phase was meters. Find the athlete's acceleration and the distance traveled during the acceleration phase.

Answer: Hengdouqing x 1 +x 2 =a(2t 0 ) 2 2t 0 =1 s3 123 to obtain a=5 m s 2 4 Let the athlete do uniform acceleration movement for the time t 1, the time for uniform speed movement and land movement is t 2, the speed of uniform motion is v, the time for running the whole distance is t, and the displacement of the whole pin is x, according to the theme and kinematics law, t=t 1 +t 2 5v=at 1 6x=at+vt 2 7 Let the displacement passed by the acceleration stage be x, then x = at8 synonym 4 8 formula, Substituting data to solve x = 10 m.

The muzzle velocity is 0,v 12 m s, t total 10 seconds, s total 100 m.

Let the minimum acceleration sought be a

The time in the uniform acceleration phase is t1 and the distance traveled is s1, then.

s1＝a*t1^2 / 2

v＝a* t1

In the constant velocity phase, there is s total s1 v*(t total t1) to get s total [ v 2)*t1] v* (t total t1) that is, 100 [ 12 2)*t1] 12*(10 t1) to get t1 10 3 seconds.

The minimum acceleration sought is a v t1 12 10 3) m s 2

The athlete starts with at least m s 2 acceleration to ensure that the race time is less than 10 seconds.

Let the acceleration time be t1, the acceleration is at least a, the maximum velocity is v, and the uniform motion time is t2 according to the kinematic formula:

v=at1v2=2as1

s2=vt2

According to the title: s1 + s2 = 100

t1+t2=10

The above solutions are: a=

Therefore, the acceleration of the athlete's start should be greater than.

A: The acceleration of an athlete's start is at least.