Part 1: Identify A and T for the cosine function shown in (Figure 3). Express your answer as the amplitude (in m) followed by the period (in s), separated by a comma. Part 2: The amplitude of the wave in Part A is tripled and the period is cut in half. Which of the following graphs correctly illustrates this?

part C: What is the position of the ball at t=2.70s for the motion represented by the scenario in Part B? Express your answer to three significant figures.