Laws Of Motion Question 125
Question: A body is moving along a rough horizontal surface with an initial velocity $ 6m/s. $ If the body comes to rest after travelling 9 m, then the coefficient of sliding friction will be [BCECE 2004]
Options:
A)0.4
B)0.2
C)0.6
D)0.8
Show Answer
Answer:
Correct Answer: B
Solution:
We know $ s=\frac{u^{2}}{2\mu \ g} $
$ \therefore $ $ \mu =\frac{u^{2}}{2gs}=\frac{{{(6)}^{2}}}{2\times 10\times 9}=0.2 $
