2.Force is equal to mass times acceleration. 3.For every action there is an equal and opposite reaction. The athletes let go of the hammer when it is at the side rather than when it faces the direction they want it to land, because it travels on a tangent and id the release it where they want it to land it’ll travel to the side and not get counted as a throw. Inward net force causes circular motion. And no matter how long or short the circular motion is there is an inward acceleration.
The further an object is from its axis of rotation, the further its linear speed. If the center of your back is the axis of rotation, the further your hold your stick out and whip it forward will cause the release of the ball to travel faster. The arms with the stick in hand act as a series of levers which propels the ball forward. Your feet causing friction with the ground allows you to twist your body and transfer the energy from linear momentum to rotational momentum. This allows your body to coil and transfer more kinetic energy into the shot.
When the shot breaks, the bullet will strike the center of the target. Once it has been center-punched, the target will neither know nor care that the launcher was quivering before the projectile took flight. As long as you hit toward the center, this tip has worked. Any marksmanship expert will tell you that consistency of grasp is a key to consistent accuracy. As stress levels change during shooting, which is really a multi-tasking exercise that gives you a lot to think about, the consistency of grasp can change too.
In the bicep curl which produces flexion at the elbow, the biceps muscle is the agonist, as seen in the image below. Fixator: is a muscle that stabilizes or fixes a part of the body to which a muscle in the process of moving another part is attached. Function Detail Provide movement The action of muscles allows you to change position and move around. Maintain posture Believe it or not, standing upright is a very difficult thing for the body to do due to the fact that gravity is pulling you down the only reason you stay standing is because of the actions of the muscles. Produce heat The
The history of catapults Catapults have been a very dangerous siege weapon was first made in 399 BC and used for war uptill ww1 and still used today to launch people in the air thousands of feet just for a thrill. The Greek Dionysius the elder of Syracuse was trying to invent a new type of weapon was trying to invent a new type of weapon and invented the catapult in 399 BC and became the essential siege weapon threw uptill ww1. Although they have changed over the years for certain purposes and decreased in size like in ww1 they used a very small version of a catapult to throw hand grenades against enemy infantry. Its bigger brother the trebuchet was made in 1200 and uses a counter weight to throw heavy objects up to 350 feet in the air. The last one was used in 1521 at the siege of the Aztec capital.
Three principles of training are overload, progression and recovery. It is a fact that a body must be overloaded above its normal level when exercised. This overload helps the body to adapt to the new “most-difficult” conditions. Therefore, the person’s fitness will increase. Let us say that a person can only run for 20 minutes; that person should run for 25 minutes to overload his muscles.
Glycogen Supercompensation in Athletes Abstract Glycogen supercompensation affects performance and can make the difference between coming in first or last (Prevost, 1999). Glycogen supplies muscles and the liver are the main source of energy for the body. The quality of glycogen within these organs directly affects the endurance of the muscle and the athlete (Arheim, 2005). Glycogen supercompensation, also known as glycogen loading, is maximizing the amount of glycogen that can be stored within the body, especially in muscles. The increase of glycogen within those structures can be dramatically increased by reducing the training program at least forty-eight hours before the actually competition.
he new metallurgical and bio industries, and many innovative mechanical inventions, had created new firepower that made defense almost invincible and attack almost impossible. These innovations included bolt-action infantry rifles, rifled artillery and hydraulic recoil mechanisms, zigzag trenches and machine guns, and their application had the effect of making it difficult or nearly impossible to cross defended ground. The hand grenade, already in existence —though crude—developed rapidly as an aid to attacking trenches. Probably the most important was the introduction of high explosive shells, which dramatically increased the lethality of artillery over the 19th-century equivalents. Trench warfare led to the development of the concrete pill box, a hardened blockhouse that could be used to deliver machine gun fire.
The dialogue of King Leonidas, the main character, really lets the viewers in on the mindset of the Spartan war machine and why it acts the way that it does. When he was talking with the Persian negotiator, his change in voice and demeanor along with the simple nod to his queen showed that he was going to escalate to violence and do something drastic which was one of the few precursors to violence in this film. For most of the movie, the tone is surprisingly upbeat due to the Spartan fighting style with a couple of lulls in between such as the death of Astinos, the son of the Spartan Captain, and the final battle in which the Spartans are killed. The tone of the movie returns to its upbeat roots in the last scene when the last remaining original Spartan returns with his own army. This movie employed the use of shock value with the decapitations, throat slicing, stabbing, and spearing.