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Done a 'tgers.quiz-lti-iad-prod.instructure.com Return Time Clear my selection 1 point Submit The position of an object undergoing vibrational motion is represented by the position-time graph below. 0.3 0.2 0.1 A.. -0.1 -0.2 -0.3 Time (s) Which of the following correctly describes this motion? It has an amplitude of 0.4 m and a period of 1.5 s. It has an amplitude of 0.4 m and a period of 3.0 s. It has an amplitude of 0.2 m and a period of 1.5 s. It has an amplitude of 0.2 m and a period of 3.0 s. Clear my selection 2 points A cart undergoing simple harmonic motion has a 2.0-Hz frequency (frequency is l/period) and 3.0-cm amplitude. At time zero, the cart is at x = +A. Which of the three position-versus-time graphs shown in figure below best represents the motion?