jobo
Grandmaster
Il think you find that gravity is ACTIVELY trying to smash you in the the floor, or what ever piece of gym equipment is between you and the floor
Learn Karate in "Three Or Four" Years?
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RTKDCMB
Senior Master
Gravity ia a common variable in either scenario.
jobo
Grandmaster
well one) gravity isn't variable, its something of a constant, certainly if you are in the same country,,, ,two) you cannot by defintion have a common variable, if it's variable its not common and if its common its not a variable, three), the Kinect energy , of hitting the ground at speed is much greater than can be inflicted by a punch, unless the the one doing the punches are themselves falling from a height at speed
RTKDCMB
Senior Master
One)
The gravitational force between two objects varies as the masses of the two objects and the distance between them varies. It is only the acceleration due to gravity that is constant for objects on the surface of the Earth, not gravity as a whole.
Two)
The definition of 'variable' means 'something that varies', it has nothing to do with how common it is. Something can vary in two different situations, i.e.
y = ax
and
y = bx
Where 'x' is the 'common' variable.
And I think the word you were looking for is 'constant', which is not variable by definition.
Three)
In both cases there is someone falling to the ground with the same kinetic energy (all other things being equal), however, in the case of the gymnast they have not been punched in the head first. A lot of people who die from hitting their head on the ground during a fight or an attack usually die because they were unconscious from the punch and don't have any control of how they fall.
jobo
Grandmaster
no it doesn't,, the gravity experienced by any object falling to earth is the same irrespective of the mass of the object
if your saying that gravitational pull is less on mars your correct, but as nether our gymnast or our karate man is on mars, it seem slightly leftfield
And the acceleration due to gravity. Varies by air restance, so not at all a constant
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RTKDCMB
Senior Master
No, the ACCELERATION DUE TO GRAVITY (g) is a constant regardless of mass.
F = GmM/r2
Where M = the mass of the Earth
m = the mass of the person.
Both the karate man and the gymnast would still experience the same acceleration due to gravity if they were both on mars.
No, the acceleration due to gravity is constant regardless of air resistance or other forces. It is only the resultant force that is different. The only way to change the value of g is to change the mass of the Earth.
Free Fall and Air Resistance
jobo
Grandmaster
clearly not, if i drop a feather and a hammer the feather will not accelerate at the same rate as the hammer, ergo the rate of acceleration due to gravity is NOT a constant,
RTKDCMB
Senior Master
Drop them both in a vacuum and they will accelerate at the same rate:
Feather drop, hammer drop, mike drop.
jobo
Grandmaster
yes but the very defintion of a constant is it applies everywhere on every occasion, as it doesnt apply to feathers on earth, which is where we live, except for in a vacuum chamber, then it clearly is not a constant
drop bear
Sr. Grandmaster
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Yeah but you are technically applying another force.
So two tennis balls of the same size drop at different rates if I catch one.
And why physics conversions get silly.
jobo
Grandmaster
and if another force affects it its not a constant, constants have to be eer constant to be a constant
drop bear
Sr. Grandmaster
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So there are no constants.
That’s like saying “learning to punch” doesn’t include the punch actually working, and “learning to fight” just means you can perform the movements, even if they don’t do what they are supposed to.
He gets people to respond, which is his goal considering he's a troll.
jobo
Grandmaster
as long as the ball ends up in the hole , then they have achieved what they were supposed to, i told you it was a poor comparison, golf is the only sport were you get infinite goes at hitting the target, well at least until it gets dark
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jobo
Grandmaster
yes PI is a constant
No, that’s not playing golf - that’s just hitting a ball in the air. And hitting into the air isn’t a requirement. Making it go where you want is an important factor. Just like a punch, in that.
jobo
Grandmaster
no the only purpose of golf is to get the ball in to a hole in the ground, that is all you need to do to be,successful, there are no limit to the number of goes you can have or the amount of time you can spend doing it. Apart from the course may close for the night, so in that frame you could spend 16hours and many thousands of hits, complete the eighteen holes and have succesfully reached the objective of the game.
That’s specious reasoning, at best. There is a measure built into the game (par). What you are saying is like saying lasting the whole fight is the goal, even if you are badly beaten and never land a single blow.
