The reaction from an ideal smooth surface must be directed along the _______at the point of contact

The reaction from an ideal smooth surface must be directed along the _

1.	The reaction from an ideal smooth surface must be directed along the _______at the point of contact
Answer» ZEROExplanation:If we IMAGINE IDEALLY smooth surface kept in contact, the frictional force acting between them is zero because there is no irregularities in the surface to interlock other surface,which will CREATE friction.Hope it HELPS...Please mark me as brainliest...

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The reaction from an ideal smooth surface must be directed along the _______at the point of contact​

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The reaction from an ideal smooth surface must be directed along the _______at the point of contact