Solve IB Exam Practice Problem: Block on Inclined Plane

[problem]

Hi this question is from past IB exam. I tried to solve it but i am not getting the right answer. Could someone please help me on this thanks a lot.

A block with mass m = 21.1 kg slides down an inclined plane of slope angle 13.3 ° with a constant velocity. It is then projected up the same plane with an initial speed 4.25 m/s. How far up the incline will the block move before coming to rest?

 

[Saketh]

Constant velocity means no acceleration. Therefore, when you write your net force equation, you can solve for the coefficient of friction.

After that, you can use energy considerations to find how far up the block goes.