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  •  A body of mass  is moving with an initial speed of <img alt="20 \mathrm{

 A body of mass 10 \mathrm{~kg} is moving with an initial speed of 20 \mathrm{~m} / \mathrm{s}. The body stops after 5 \mathrm{~s} due to friction between body and the floor. The value of the coefficient of friction is: (Take acceleration due to gravity .g=10 \mathrm{~ms}^{-2})

Option: 1

0.3


Option: 2

0.5


Option: 3

0.2


Option: 4

0.4


Answers (1)

best_answer

\mathrm{v}=\mathrm{u}+\mathrm{at}

0=20-\mu g(5)
\mu=\frac{2}{5}=0.4

Posted by

Shailly goel

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