Which trend line describes the set with the greatest rate of change?
oy=7.5x+3.8
o y=9.8x+6.7
y = 3.8x+7.5
o y = 6.7x+9.8

y = 9.8x + 6.7

Explanation:

9.8 has the steepest slope.  And I also got 100% on edge

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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no. dot product   =0 when vecs at right angles