A) \[20\,\,m{{s}^{-}}^{1}\]
B) \[40\,\,m{{s}^{-}}^{1}\]
C) \[25\,\,m{{s}^{-}}^{1}\]
D) \[10\,\,m{{s}^{-}}^{1}\]
Correct Answer: A
Solution :
The relative velocity of scooter w.r.t. bus, \[\overrightarrow{{{\nu }_{S,B}}}\,=\,\,\overrightarrow{{{\nu }_{S}}}\,\,-\,\,\overrightarrow{{{\nu }_{B}}}\,=\,\,\overrightarrow{{{\nu }_{S}}}\,\,-10\] ? (i) \[\operatorname{Re}lative\,\,velocity\,\,=\,\,\frac{\operatorname{Re}lative\,\,displacement}{time}\] \[{{\nu }_{S}}-10=\frac{1000}{100}=10\,\,\,\,\,\Rightarrow \,\,\,\,{{\nu }_{S}}=20\,\,m/s\]
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