I need help to solve the last question

Part 2 of 8 - Step 2 Consider the two wave pulses shown below. 1 = 0 3 y2(x, t) 2 VI (x, t) O X O 5 10 15 20 25 Assume the y-axis is measured in meters. The peaks of the two pulses will overlap at t = 2 s. What is the amplitude (in m) of the resulting wave at t = 2 s? 3 Correct. The waves superimpose to create a larger wave. m The wave pulses no longer overlap at t = 4 s. What is the amplitude (in m) of the blue wave, y, (x, t), at t = 4 s? Correct. Both waves continue to travel undisturbed with their original amplitudes and velocities. m Now consider these two pulses that are moving towards each other in the figure below.Now consider these two pulses that are moving towards each other in the figure below. 1.0 0.5 X O U 10 15 20 -0.5 -1.0 They have the same amplitudes, but one is upside down. What is the amplitude (in m) of the resulting wave when the pulses completely overlap? m