Answer:
0.34 m
Step-by-step explanation:
We are given that

Initial speed of box=u=1.1 m/s
Coefficient of friction,

We have to find the distance slide down by the box before coming to rest.
Friction force=f=

Where

Net force=



Substitute the values



Substitute the values




Hence, the box slide down the incline 0.34 m before coming to rest.