Respuesta :

At which point? From a to b it is positive, from b to c it is zero and from c to d it is negative.
SpiritInly

Answer:

A-B: positive

B-C: zero

C-D: negative

Explanation:

In a velocity-time graph, acceleration is shown by the slope or steepness of the graph. A positive acceleration means that the line of the slope is upward, while a negative acceleration means that the line of the slope is downwards.

A horizontal line shows that the acceleration is 0, which means that the object is stationary.

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