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## Homework Statement

caculate the force of friction and coefficent of fricition acting on a sliding block given that the acceleration at 3.0 m/s sqaure

## Homework Equations

coefficent of friction = fn/ff

force of friction = u fn = u fg

## The Attempt at a Solution

im stuck im only given the accelaration and mass is 4 kg too how can i solve this?