LOL.
I love how gravity is the answer to every question that can't be logically explained.
Please tell me how gravity can stick all the oceans in the world on a spherical globe but can't keep LeBron James on the ground when he decides to jump?
For such a powerful force that can keep oceans stuck to a spinning ball, it doesn't take much to beat it if you decide to jump.
Gravity is the biggest load of crap ever thought of and I can't believe people believe it. It literally makes no common sense. It only makes sense if you've been conditioned since birth to believe it.
Since when does water try to jump upwards for a tomahawk dunk breh? Ever heard of floods, tsunamis, monsoons, typhoons, and hurricanes?
Force = mass times acceleration
Acceleration =
dv/
dt, d being short for "delta", a greek letter standing for change. E.g. change in velocity divided by change in time
The reason it's important to understand that acceleration is derived from velocity is because velocity = distance/time. So for there to be a "distance" measured you have to be moving in a direction. In physics we usually call this a vector.
OK now that we know that acceleration is the change in velocity for a given period of time in a specific direction, now we come back to force.
Force = mass x acceleration. Now we need to know what energy is in relation to force:
Energy = F dx, or basically force exerted over a specific distance.
Let's assume Lebron weighs 100kg for the sake of argument. The force holding him to the ground is 980 Newtons (kg*m/s^2), we will say N= Newtons for short, so 980 N.
So if 980 N is holding Lebron to the ground, how many Newtons does he need to break gravy? All he needs is to be able to exert a force with his legs greater than 980N!
But wait, why doesn't Lebron just sink through the ground straight to the center of the earth if there are 980N of force pulling him there?
You guessed it,
THE GROUND!!!! So if the ground is preventing Lebron from falling to the center of the earth, it is exerting an opposite force of at least 980N!!!! So what does that mean my science brehs?:
LEBRON ONLY NEEDS AN INFINITESIMAL AMOUNT OF FORCE TO BREAK GRAVITY!!!! If he can generate 1N OF FORCE WITH HIS LEGS THEN HE CAN JUMP!.
That's why any kid can jump. That's why you jump higher on a trampoline, and that's why you can't run as well in a muddy surface, because the force of the surface under you is less or more. You don't need to accelerate greater than 9.8 m/s^2 because the GROUND is helping you up. If you don't believe me, walk over the edge of a cliff near you, preferably at least 100 feet high, then try to jump, and come back here and post on the Coli and let us know how it works out for you You guys seriously need some basic physics course, the ignorance in this thread is very frightening.