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KCET2021PhysicsMotion in Two Dimensions

The maximum range of a gun on horizontal plane is 16 ~km . If g=10 ~ms ⁻² , then muzzle velocity of a shell is

Options

  1. A160 ~ms ⁻¹
  2. B200 2 ~ms ⁻¹
  3. C400 ~ms ⁻¹
  4. D800 ~ms ⁻¹

Correct answer

C. 400 ~ms ⁻¹

Step-by-step solution

Given, R=16 ~km , g=10 ~ms ⁻² As we know that, maximum range, R_ = u² g 16 10³= u² 10 u= 16 10³ 10 =4 10²=400 ~ms ⁻¹

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