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1. Shown at right is a \"snapshot" of a spring with two identical pulses traveling along it. {The size and shape of the pulses are exaggerated for clarity.) Each pulse moves with a speed of 4 mls. and the pulses are moving toward each other. Sketch the shape of the spring at the following instants. Explain your reasoning in each case. - one second after the snapshot above was taken: - two seconds aer the snapshot above was taken: 2. One end of a spring is fastened to a wall so that it cannot move. An asymme'ic pulse moves toward this end of the spring at a speed of 3 mls. as shown in the upper gure at right. 0n the lower gure. sketch the shape ofthe spring two seconds after the instant shown in the upper gure. Explain your reasoning