when you are jumping on a trampoline you dont fly into space.
You can't play soccer if there is no gravity in the first place. So, the presumption in the question statement that gravity is not useful in soccer is not valid.
with out it we would be floating around gravity pulls everything down to the center of the earth
gravity and momentum
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Yes. A useful formula for weight is:weight = mass x gravity ... where gravity is the gravitational acceleration, for example around 9.8 meters/second squared near Earth's surface.
Gravity is a force that keeps things from floating in mid air. Without it you would have been out of the earth by now!! Gravity is a strength deep under the earth (from the inside). Hope this was useful..
Specific gravity is the same as density, so if anything except diamondis used then the density would be changed
friction is useful because without it we wouldn't be able to walk or do anything for that matter. friction lets us grip onto things with the help of gravity
Science is useful in gymnastics because it contributes to every trick that you may do. For example, the force of gravity affected your balance and performance on every element and equipment in the whole gym centre, AKA; the beam- your sense of balance, the bars and rings- gravity pulls you down, and on the trampoline and floor, you are able to fly through the air(but not for very long)!!!Science is useful in gymnastics because of gravity, surface tension, heat energy, static electricity and friction.
Math is very useful in all of those subjects, especially chemistry formulas, physics gravity equations and engineering 3D objects/drawings.
A Spring is useful in "storing" energy. It is also useful to provide a "measured resistance" to counter-act an opposing force or energy. Or to determine "mass", or gravity expressed as newtons , or plain old lbs or weight. A spring can be useful in many ways. It can reduce shock to components ,vehicles and even bldg's.
When pushing something up against the force of gravity, you are making an "energy investment", so to speak. (You require energy to push the object up; this energy can be recovered when the object falls back down.)