A) \[24.7\,\,m\]
B) \[19.8\,\,m\]
C) \[9.8\,\,m\]
D) \[4.9\,\,m\]
Correct Answer: C
Solution :
Here: initial velocity\[xv=-4.9\,\,m/s(-ve\] is due to vertically upward motion) Total time\[t=2\sec \] The height of the bridge is given by \[s=ut+\frac{1}{2}g{{t}^{2}}\] \[=-4.9\times 2+\frac{1}{2}\times 9.8\times {{(2)}^{2}}\] \[=-9.8+19.6=9.8\,\,m\]You need to login to perform this action.
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