Consider the normal modes of a linear chain in which the force constants between nearest-neighbor atoms are alternately C and 10C. Let the masses be equal, and let the nearest-neighbor separation be a/2. Find (K) at K 0 and K /a. Sketch in the dispersion relation by eye. This problem simu- lates a crystal of diatomic molecules such as H2.

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.

there are no atoms