Question

why does soles of shoes/tyres of vehicles/eraser/brake pads of vehicles wear out gradually

Answer 1

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HEY BUDDY HERE IS UR ANSWER

Due to friction between the surface of shoes and tyres, the outer surface of these matwrials wear out. Friction is the reason why we are able to walk, run and break our cars. When that happens the outer surface of the materials rub eachvother at a molecular level, the resist each others movement and when the force applied to move the object exceeds the force applied by frictional forces to stop it, objects move. But in the process some molecules are removed from the outer most surfaces each time and that is what leads to gradual wear


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Answer 2

Hello here is your answer.
this all is because of Friction
when we walk on ground the soles of shoes are rubbed against the ground and they slowly wear out
same with the tyres, they wear out due to the continuous use on ground.