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The maximum range of a gun on horizontal...

The maximum range of a gun on horizontal terrain is 1km. If `g = 10 ms^(-2)`, what must be the initial velocity of the shell ?

A

`100 ms^(-1)`

B

`400 ms^(-1)`

C

`200sqrt(2)ms^(-1)`

D

`160sqrt(10)ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`R_("max")=(u^(2)/(g))rArr u^(2)=Rg=16000xx10`
`therefore u=400m//s`
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