Question

what does a zero line on an acceleration vs. time graph indicate about the velocity of the object? the object is slowing down the velocity is constant the object is at rest the object is speeding up

Explanation:

Acceleration is the rate of change of velocity. A zero - line on an acceleration vs. time graph means there is no change in velocity over time. When there is no change in velocity, the velocity is constant. An object at rest has a velocity of zero, but a zero acceleration doesn't necessarily mean the object is at rest (it could be moving with a non - zero constant velocity). Speeding up means positive acceleration and slowing down means negative acceleration.

Answer:

The velocity is constant