A) \[40\text{ }m{{s}^{-1}}\]
B) \[20\text{ }m{{s}^{-1}}\]
C) \[30\text{ }m{{s}^{-1}}\]
D) \[\text{15 }m{{s}^{-1}}\]
Correct Answer: B
Solution :
[b] \[\operatorname{v}=\sqrt{gr}=\sqrt{10\times 40}=20m{{s}^{-1}}\]You need to login to perform this action.
You will be redirected in
3 sec