Gravity is the force that draws object's to the center of our Earth. Anything that posses of mass also has gravity. Though objects with more mass have more gravity, as gravity also becomes weaker the further the distance. For example, the gravitation pull between the moon and the Earth, is what keeps the moon rotating around our planet, and if it was further away it may not be rotating around us anymore, and if it was closer to us the moon would collide into the planet., because the gravitation pull is too strong to withstand.
Since there is elastic force the guy is about to go back up in the air
Without gravity, simple things we do everyday wouldn't be able to be accomplished. For example, when we play basketball, without our trusty teammate gravity, not only would the ball soar airborne forever, we would too when we jump to shoot! Though, thanks to gravity we're held down, and we can sink those deep threes!
Elastic Force part 2
Yeah, I heard about that when I was in science. My teacher told me that without it we wouldn't be able to do a lot of the things we do today.
Friction is the resistance of a surface, or object encounter, when moving against one another. For example, friction is used when Ice skating, (sliding friction) when the ice skate encounters the ice, you slide against the ice, due to the sliding friction encounter bwtween the skate and the ice, you slide across the surface, helping hockey players score goals. Because without it, the game of hockey would not be as fast paced as it is known to be today.
Elastic force is the tension when an object is stretched. When something is being stretched or when you're stretching something the more force applied to the band, the stronger the outcome of the elastic force would be. When you're bungee jumping the cord is being stretched off the bridge and when the cord is fully extended, the cord will stretch out and when it can no longer o any farther you will get shot back up in the air thanks to elastic force.
Without elastic force things we do such as using some workout equipment. Elastic force creates tension when you pull on the object such as the workout the person on the left is doing. He has to pull down on the bar and when he pulls the elastic force will make it harder for him to pull down. Also if you stretch a rubber band and it gets hard to pull that is the elastic force.
Did you know that without elastic force you would not be able to do that exercise?
Magnetism is used a lot in compasses and when a magnet attracts or repels another magnet or another object that has magnetic material in it. Magnetism is produced by the motion of an electric charge, resulting in attractive and repulsing force between objects. The red needle (Red Fred) is attracted towards the pull of magnetism from the north making it point north.
People try and find their way around with compasses if they're lost so they know where north, south, east, and west are.