Hang Time - Can It Be Increased?
As he is coming down the court and jumps, scientific laws start to apply. The laws state that the first action causes another action that is identical in intensity but in the opposite direction. What this means in layman's terms is that the player pushes against the floor and the floor exerts a force back. This action/reaction makes the player to leave the floor. The more force the player uses when pushing against the floor, the more force the floor exerts back - resulting in the player going higher into the air.
If a player is running during the jumping process, his/her center of mass follows a parabolic path, which basically looks akin to a rounded off mountain top. A persons "center of mass" is located around their midsection. This means that, if the person were to continue in just the same position for the extent of the complete jumping act, his/her midsection (and therefore, whole body) would follow this path. Usually though, a player does not continue in the same position. He will bend and twist.
One thing that players frequently do is lift one (or both knees) while he is jumping.. He does that on his way up. On the way down, of course, he lowers his legs back down and that, in turn causes the center of mass to come back down. This in effect raises his head in relation to the center of mass. The head does not follow the parabolic path. The head stays at one height.
So what you get is for a part of the time in the air, the head stays at the identical height, but ,throughout the entire time the center of mass goes up and down.
In essence, the player's head is the key to why we believe in hang time.
When we look at each other, we don't frequently look at the person's "center of mass". Instead, we commonly look at the other person's head. What happens at that moment is a bit of an "illusion", but it really is happening. The head stays in the same place for an unnaturally long time since the person changes his center of mass.
Well, if "hang time" is not genuine, how is it that one person can stay in the air longer than another person? The only alternative left is that he can JUMP HIGHER! If you can't improve your hang time then, you have to learn to jump higher!
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