| Take \[\sqrt{3}=\text{1}\text{.7 }\]and \[\text{g = 10 m}{{\text{s}}^{-2}}\] |
A) 6.8 m
B) 7 m
C) 5 m
D) 10 m
Correct Answer: C
Solution :
[c] \[y=x\tan \theta -\frac{1}{2}\frac{\text{g}{{\text{x}}^{2}}}{{{\text{u}}^{2}}{{\cos }^{2}}\theta }\] \[y=50\tan 60{}^\circ -\frac{10\times 50\times 50}{20\times 25\times 25\times {{\cos }^{2}}60{}^\circ }=5\text{m}\]
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