Two trains leave Jamaica Station along, parallel tracks. Train 2 stops at Floral

Question

Two trains leave Jamaica Station along, parallel tracks. Train 2 stops at Floral Park Station, while train I does not stop and passes train 2 10 minutes alter departing Jamaica Station, the graph below shows the positions of the trains, labeled 1 and 2, as functions of time. Ten minutes in to the trip (t=10 min). are the velocities of the trains equal? If not, which is larger? For the first 10 minutes (from t= 0 to t=10 min). are the average velocities of the trains equal? if not, which is larger? For the second 5 acceleration of train I positive, negative, or zero? For the second 5 minutes of the trip (from t=5 min tot= 10 min), is the average acceleration of train 2 positive, negative, or zero?

Explanation / Answer

a) not equal.

velocity of train 1 is larger.

here, velocity = slope of the stright line

b) same

c) zero. since velocity is constant.

d) negative. since it is coming to rest poition.

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