Question

(02.02 lc)
warm - ups make it easier for your body to release ____ from your blood.
a acids
b oxygen
c sodium
d toxins

pregunta 6 (3 puntos)
(02.02 lc)
to safely cool down, gradually reduce the pace of your exercise in the last ____ minutes of your workout or activity.
a two
b five
c ten
d twenty

pregunta 7 (3 puntos)
(02.02 lc)
which of the following types of levers increase the force applied, while the weight is between the pivot point and the force?
a first - class
b fourth - class
c second - class
d third - class

pregunta 8 (3 puntos)
(02.02 mc)
which of the following principles of biomechanics would a sprinter most likely need to apply to take off at the beginning of a race?
a acceleration
b angles
c friction

Explanation:

1. During warm - ups, the body's blood vessels dilate, making it easier to release oxygen to the working muscles. Oxygen is crucial for energy production during exercise.
2. To safely cool down, it is recommended to gradually reduce the pace of exercise in the last five minutes of a workout to allow the body to adjust and prevent blood pooling.
3. In a second - class lever, the weight is between the pivot point and the force, and it increases the force applied.
4. A sprinter at the beginning of a race needs to quickly gain speed, which is related to acceleration. Acceleration is the rate of change of velocity and is essential for a fast start.

Answer:

1. b. oxygen
2. b. five
3. c. Second - class
4. a. Acceleration