E. there is no relative motion between the two surfaces in contactin c

1.	E. there is no relative motion between the two surfaces in contactin case of friction.
Answer» The force of frictionThe frictional force is the other COMPONENT; it is in a DIRECTION parallel to the plane of the interface between objects. ... When a frictional force exists but there is no relative motion of the SURFACES in contact (e.g., the book isn't sliding across the table), we call it a static frictional force.

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E. there is no relative motion between the two surfaces in contactin case of friction.​

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E. there is no relative motion between the two surfaces in contactin case of friction.