A) 19.6 m
B) 39.2 m
C) 156.8 m
D) 78.4 m
Correct Answer: D
Solution :
\[t=4\text{ }sec\] \[g=9.8\text{ }m/{{s}^{2}}\] \[h=?\] We know \[h=\frac{1}{2}g{{t}^{2}}\] \[(\because u=0)\] \[h=\frac{1}{2}\times 9.8\times {{4}^{2}}\] \[=8\times 9.8\] \[\therefore \] \[h=78.4\text{ }m\]You need to login to perform this action.
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