Answer: The correct answer is option B.
Explanation:
Mass of the sled = 10 kg
Initial speed of the sled = 2 m/s
Kinetic energy of the sled = [tex]\frac{1}{2}mv^2[/tex]
[tex]\frac{1}{2}\times 10 kg\times (2 m/s)^2=20 Joules[/tex]
Work done by the sled = 20 joules
The work done by the friction will be in opposite direction and equal to the magnitude of the work done of the sled that - 20 J.
Hence, correct answer is option B.
