The problem that follow involve straight-line motion. The time t is in seconds unless otherwise stated.
Problem
A seismograph measures the horizontal motion of the ground during an earthquake. An engineer analyzing the data determines that for a 10-s interval of time beginning at t = 0 the position is approximated by s = 100 cos(2πt) mm. What are (a) the maximum velocity and (b) the maximum acceleration of the ground during the 10-s interval?
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