The combination of metal with carbon and oxygen (calcite, dolomite)

the answer is c.)

explanation:

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

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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pe = weightxheight = 2000x1000=2,000,000joules