Q.

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

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a

400ms-1

b

200ms-1

c

100ms-1

d

50ms-1

answer is C.

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Detailed Solution

Rmax=u2g at θ=45°

  u=gRmax=100 ms-1

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