Acceleration in one dimension

[yitriana]

Homework Statement

"2 cars C and D travel in the same direction in straight line. During particular time interval t, car D is AHEAD of car C, and D is speeding up while car C is slowing down. During the interval t, it is observed that the distance between the cars decreases. Explain how this is possible and give an example."

Homework Equations

The Attempt at a Solution

I don't see how this is possible. If Car C is slowing down, and Car D is speeding up, and same direction, how can the distance between them possible decrease?

 

[LowlyPion]

Consider a case where the speeds are initially different.

 

[sugaJ]

The velocity or starting positions could be initially different