Kinetic Friction with an upward shove

[lauriecherie]

Homework Statement

In the figure below, the coefficient of kinetic friction between the block and inclined plane is 0.17 and angle θ = 55°. What is the block's acceleration (magnitude and direction) assuming the following conditions? (b) It has been given an upward shove and is still sliding up the slope.
I also figured out that the accelertaion (magnitude and direction) when it is sliding down. That answer is 7.079 m/s^2

Homework Equations

The Attempt at a Solution

I've tried 8.036 & 7.079 m/s^2. Both were incorrect :(

 

[alphysicist]

Hi lauriecherie,

Homework Statement

In the figure below, the coefficient of kinetic friction between the block and inclined plane is 0.17 and angle θ = 55°. What is the block's acceleration (magnitude and direction) assuming the following conditions? (b) It has been given an upward shove and is still sliding up the slope.
I also figured out that the accelertaion (magnitude and direction) when it is sliding down. That answer is 7.079 m/s^2

Homework Equations

The Attempt at a Solution

I've tried 8.036 & 7.079 m/s^2. Both were incorrect :(

What did you do to get those answers?