A) 3 sec and 2000 m
B) 5 sec and 500 m
C) 8 sec and 1500 m
D) 9 sec and 1800 m
Correct Answer: D
Solution :
[d]\[t=\sqrt{\frac{2h}{g}}=\sqrt{\frac{2\times 396.9}{9.8}}\tilde{-}9\,\sec \] and \[u=720\,km/hr=200\,m/s\] \[\therefore \] \[R=u\times t=200\times 9=1800\,m\]You need to login to perform this action.
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