Answer:

Step-by-step explanation:
Given:
Mass of marble =

Initial velocity of marble =

Final velocity of marble = 0 as it comes to rest.
By work energy theorem:
Work done by forces acting on marble is given by :
Work done = Final Kinetic energy - Initial Kinetic energy
Kinetic energy can be calculate using formula:

where
represents mass of body and
represents velocity of body.
Final kinetic energy:

Initial kinetic energy

Work done by friction on the marble
