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Which of the following is an example of positive acceleration? A boy running from his house around the block and ending up back home. A car slowing down as he turns left around a curve. A track star speeding up as he sprints to the finish line. A horse standing in a pasture.

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ladykitkat

The answer would be a track star speeding up as he sprints to the finish line.  

Positive acceleration is when the acceleration is moving in the same direction as the velocity, in an upward manner (visually, on a graph).  So, if a track start is speeding up, going in the same direction which is towards the finish line, than that would be considered positive acceleration.  Hope this helps! :)

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