When an object experiences centripetal acceleration, in which direction does it accelerate? a. inward, toward the center of the circle b. in the direction it's moving c. outward, away from the center of the circle d. toward the ground

Centripetal acceleration points from the object toward the center of the circular path it's traveling.

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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the area between the graph and the t axis