Failed my Physics Test Need help on a question?

[longcat93]

nevermind thanks

 

[vinnyzwrx]

im a student as well but i think i may be able to help,

sum of forces = ma
frictional force = (mu)normal force
and the normal force = mg

mu = friction coefficient

find acceleration via the constant acceleration formulas without time

 

[longcat93]

i still don't understand. can anyone do the problem step by step with the answer?

 

[Dickfore]

No! Provide your solution and we will tell you if it is correct or not.