Physics with Shaolin Soccer!?

Well, i have to do a project where i explain the physics involved with the movie Shaolin Soccer. I need to know some math equations that i could use to show that you can not jump 20 feet into the air, that you can not head butt a ball 20 feet into a goal and knock the goalie over, and that you can not just stand and then kick someone into the air.

Physics with Shaolin Soccer!?
shaolin soccer is awesome!





an equation... since the first guy is stationary in the air and the goalie is stationary (yes this would only apply if the first guy is in the air and the goalie takes off on impact, touching the floor screws it up)





M1*V1 + M2*V2 = 0





where M1 and M2 are the masses of the players, and V1%26amp;2 are the velocity of the 2 players. if one flys back, the other move in the opposite direction to conserve the momentum (or spin round to make angular momentum). the ball just transfers the momentum (with complete efficiency in this model). since they are about the same weight v1~v2


you could probably demonstrate it quite well with trucks or something...





if he headed the ball he'd probably do himself a mischief!





when the guy calls his family to tell them he loves them, before he tries to save a penalty is classic :D
Reply:With enough chi you can do those things. I have seen it in person.
Reply:Nothing in Physics would tell you that you cannot do the aforementioned things. Theoretically, all are quite possible.
Reply:The reason you cannot do those things is becuase of the theories of force and momentum. Use the newtain laws for force to explain why you cant do that.The equation is F=m*a which is force equals mass times acceleration. The reason that you cant knock a person over with a soccer ball is because it doesnt have a substantial amount of mass and that no matter how much force you put into the soccer you wont knock a person over a just 20 feet acceleration formula is a= V/t which is the change in velocity over time.So the father it is the faster the acceleration,for example if I fire a soccer ball 100 yards away from a person from a cannon I'll definetly knock that person down because of the force increase so the momentum increases.The momentum formula is P=F*d which is momentum equals force times distance so that's why it couldn't knock anyone over because it could'nt have generated enough force and momentum to knock anyone down from just 20 feet from a human kick,the kick doesn't even generate a enough force to gain enough force to knock a person down.





Now for the 20 foot jump in the air,have you ever heard the gravitational constant be 9.81 m/s^2.It is the average cal. constant for gravity on Earth.There is no way a human can jump that high because Fg=G(m1*m2)/r^2 this means the force of gravity equals the universal gravitional constant (which 6.663*10^-11) times the mass of the object times the mass of the planetary object(the mass of Earth is 5.874*10^8)divided by the center of distance squared. The person that's trying to jump that high must have a stronger force upward than the force of gravity downward.To achieve this the person would have to had lived on a planet aleast three times the gravity of Earth(let's say 1g=9.81N).Multiply that by three and they'll be able to jump 20 feet in the air,but since that's highly improbable that's impossible.





So I answer all you're.Good luck with you're project