A) Zero
B) 0.2m
C) 0.4m
D) 0.8m
Correct Answer: B
Solution :
[b] \[u=4m/s\] \[v\text{ }=\text{ }0~~~~~~comes\text{ }to\text{ }rest\text{ }t\text{ }=\text{ }0.1\text{ }sec\] \[v=u+at\] \[0=4+a\text{ (0}\text{.1)}\] \[a=-\,40\,m/s\] \[{{v}^{2}}-{{u}^{2}}=2aS\] \[0-{{(4)}^{2}}=2(-40)S(v=0)\] \[-16=-80S\] \[S=\frac{1}{5}m=0.2m\]You need to login to perform this action.
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