A) \[n=\frac{2h{{u}^{2}}}{g{{b}^{2}}}\]
B) \[n=\frac{2hu}{g{{b}^{2}}}\]
C) \[n=\frac{2{{b}^{2}}}{2h{{u}^{2}}}\]
D) \[n=\frac{g{{b}^{2}}}{2hu}\]
Correct Answer: A
Solution :
If the ball hits \[nth\] step, then horizontal distance traversed\[=nb\] vertical distance traversed\[=nh\] Here velocity along vertical direction\[=0\] \[\therefore \] \[nb=ut\], and \[nh=0+\frac{1}{2}g{{t}^{2}}\] \[\Rightarrow \] \[t=\frac{nb}{u}\], and \[nh=\frac{1}{2}g{{\left( \frac{nb}{u} \right)}^{2}}\]You need to login to perform this action.
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