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Related: About this forumHow would football work if you tried to play it on Mars?
A human colony on Mars will need several things: air, water, protection from radiation, and football. OK, maybe the colonists wouldnt technically need football, but they will probably want it. Mars isn't just a red desert, though. It has lower gravity and a less dense atmosphere. And both those factors would make football very, very different than the game we play on the Big Blue Marble.
The gravitational force is an interaction between objects that have mass. When you are standing on the Earth, the two objects interacting are you and Earth. You can calculate this gravitational force if you know the masses of the two objects and the distance between their centers. (Because you're are not so tall compared to the size of the planet, that distance is essentially just Earth's radius.) If you move to the surface of Mars, those factors obviously change. Mars has a mass that is just 0.107 times Earth's and a radius of about half of Earth's. The combination of these two differences produces a gravitational field about a third of what you grew up in, presuming you grew up on Earth.
So a person who weighs 700 newtons on the surface of the Earth (about 157 pounds-force) would weigh only 265 newtons on Mars. You wouldn't just feel lighter; you'd also run differently. Think of running as a bunch of tiny jumpssince both feet are off the ground at the same time; otherwise it would be speed walking). Lets say that a human takes a stride with an initial velocity v at an angle of ?.
Using some basic projectile motion equations, you can find the distance this object (or human) will travel over level ground before coming back to the surface.
Here s is the distance traveled and g is the gravitational field. As you can see, decreasing the gravitational field will increase the distance traveled. On Mars, with a gravitational field 1/3 the value, a runner with the same starting velocity and angle would travel 3 times as far.
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For more informative reading: http://www.si.com/nfl/2015/10/28/super-bowl-100-football-mars
But wait, theres more. If we assume the Mars Football League players can throw the ball just as fast as on Earth, then their range would also increase by a factor of 3. If you could throw it 50 yards on Earth, that would be about 150 yards (ignoring air resistance) on Mars. If you've read this far, I probably don't need to remind you that the distance from one end zone to the other is 100 yards.
Heh! Wonder how that is affected by Brady's Law of Deflated Footballs!!!
KamaAina
(78,249 posts)I suspect that most of the colonists would prefer a pitch to a stadium.