What is the natural state of the moving
football on the ground, If friction is not
applied by the grou
nd?
Is it inrest or in motion? Why?
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The force of gravity is the force with which the earth, moon, or other massively large object attracts another object towards itself. All objects upon earth experience a force of gravity that is directed "downward" towards the center of the earth.
The friction force is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are two types of frictional force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object.
Hence, gravity is a non-contact force and friction is a contact force.
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