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Integrating an accelerogram once gives the ground

  • A.acceleration again
  • B.velocity
  • C.displacement
  • D.jerk

Answer: B

Correct answer: velocity

Acceleration integrated once with respect to time gives velocity, and integrated again gives displacement - each integration requiring a constant of integration and, in practice, careful baseline correction and filtering. Differentiating in the other direction gives jerk. Displacement matters because it drives the deformation of structures, while acceleration drives the inertial forces on them.

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