In the image below, a free-body diagram represents the forces of several vehicles driving across a bridge. Assume that the bridge is in statio equilibrium and that it has zero weight, and solve for the unknown reaction force A. 10,800 N
B. 65,200 N
C. 120,200 N
D. 53,400 N​

The answer is "57,400 N".

Explanation:

The answer is 57,400 N because the choices are wrong.

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