Pease answer this From the given graph find the intensity for every point and for every time.

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.

490 n

f=125n a=2.5m/s2