Avery is walking along the edge of a platform while a train approaches from the

Question

Avery is walking along the edge of a platform while a train approaches from the West. The following expressions give the velocities of Avery and the train relative to the platform. The positive direction is to the East.

Bodhi and Didier are walking in the aisles of the train cars. The following expressions give their velocities relative to the train, with positive speeds pointing to the front of the train.

Rank the pairs of people based on their relative acceleration components at t = 3.1 s.

Most Positive Relative Acceleration - Most Negative Relative Acceleration

- Didier/Bodhi

- Avery/Didier

- Didier/Avery

-Avery/Bodhi

-Bodhi/Didier

-Bodhi/Avery

Figure Given with Problem:http://imgur.com/saeNRr7

Explanation / Answer

accelaration = dv/dt

at = 3.1

aAP = 0.19m/s^2

aTP = -2.11 + 0.15t = -1.645

aBT = -0.13

aDT = 0.15

DB = 0.28

DA = -0.04

AB = 0.32

BD = -0.28

BA = -0.32

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