Friction to move elsewhere

 What is the easiest definition of friction?

Friction is the force that resists motion when the surface of one object comes in contact with the surface of another.

What is Frictional Force? - Definition, Formula, Examples ...

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Introduction

  1 A 'flat' gravity well. 2   source Just look at the image. Ignore 'spacetime'. Too hard.    3    Select      Choose a si...