A) 1
B) 10
C) 2
D) 0.1
Correct Answer: D
Solution :
From equation of motion, we have \[{{v}^{2}}={{u}^{2}}+2as\] where v is final velocity, u the initial velocity, a the acceleration and s the displacement. Given,\[v=0\](block stops),\[u=10\text{ }m/s,\] \[s=50\text{ }m\] \[\therefore \] \[0-{{10}^{2}}=2\times a\times 50\] \[\Rightarrow \] \[a=-1\text{ }m/{{s}^{2}}=ug\] \[\Rightarrow \] \[\mu =\frac{1}{10}=0.1\]You need to login to perform this action.
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