What is the fossil record? a. The list of the all fossils that exist.
b. The history of a single fossil species.
c. The history of life on earth as recorded on fossil.
d. The geologic history of Earth up to the appearance of life.

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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in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west