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KVPY2012PhysicsMotion in Two Dimensions

A firecracker is thrown with velocity of 30 ~ms ⁻¹ in a direction which makes an angle of 75^ with the vertical axis. At some point on its trajectory, the firecracker splits into two identical pieces in such a way that one piece fall 27 m far from the shooting point. Assuming that all trajectories are contained in the same plane, how far will the other piece fall from the shooting point ? (Take g =10 ~ms ⁻² and negle

Options

  1. A63 ~m or 144 ~m
  2. B72 ~m or 9 ~m
  3. C28 ~m or 72 ~m
  4. D63 ~m or 117 ~m

Correct answer

D. 63 ~m or 117 ~m

Step-by-step solution

Undér influéncé of constānt forcee céntre of māss follows its original path array l R = 30 30 1 2 10 =45 ~m 45= m 27+ mx m + m x =63 ~m , 117 ~m array

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