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A missile is fired for maximum range with a initial velocity of 20 ~m / s . If g=10 ~m / s ^2 , the range of the missile is

Options

  1. A50 ~m
  2. B60 ~m
  3. C20 ~m
  4. D40 ~m

Correct answer

D. 40 ~m

Step-by-step solution

For maximum range of projectile will be 45^ by the law of projectile motion R_ = u^2 g Given, u=20 ~ms ⁻¹ and g=10 ~ms ⁻² aligned & R_ = (20)^2 10 = 400 10 & R_ =40 ~m aligned

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