A body having initial velocity of 10 m/s moving on a rough surface comes to rest after moving 50 m. What is coefficient of friction between the body and surface? \[(g=10\,m/{{s}^{2}})\]
A)0.5
B) 0.2
C)0.3
D) 0.1
Correct Answer:
D
Solution :
[d] Use a \[=\mu g\] and \[{{v}^{2}}={{u}^{2}}+2as\]