A $0.10\, kg$ block oscillates back and forth along a horizontal surface. Its displacement from the origin is given by: $x = (10\,cm)\cos [(10\,rad/s)\,t + \pi /2\,rad]$. What is the maximum acceleration experienced by the block
  • A$10\,\,m/{s^2}$
  • B$10\,\pi \,m/{s^2}$
  • C$\frac{{10\pi }}{2}\,m/{s^2}$
  • D$\frac{{10\pi }}{3}\,m/{s^2}$
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