A) \[\frac{5}{\sqrt{3}}m/s\]
B) \[5\sqrt{3}\,m/s\]
C) \[5\,m/s\]
D) \[\frac{10}{\sqrt{3}}\,m/s\]
Correct Answer: D
Solution :
Let v be the velocity of projectile at this instant. Horizontal component of velocity remains unchanged. Therefore, \[v\cos {{30}^{o}}=10\cos {{60}^{o}}\] or \[v\frac{\sqrt{3}}{2}=\frac{10}{2}\] \[\therefore \] \[v=\frac{10}{\sqrt{3}}m/s\] Hence, the correction option is [d].You need to login to perform this action.
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