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Velocity-time graph?

Finish this statement/phrase:
"What does a constant slope mean in a velocity-time graph? Slope means acceleration. Therefore, if we have a constant slope, we have a constant ______."
(1) constant acceleration 
(2) constant velocity 
(3) changing acceleration 
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1 Answer

A constant slope in a velocity vs. time graph means that the body is accelerating at a constant rate, since
Δv/Δt = a = constant = slope 
The correct answer is (1), constant acceleration.