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In which situation is an object accelerating? A. A car is parked on the side of the street. B. A bicycle travels at a constant velocity down the street. C. A rock's velocity increases from 5 m/s to 10 m/s as it falls down a cliff. D. The velocity of a paper airplane is 2 m/s. Four seconds later, the velocity is still 2 m/s.

User Jonno
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4 votes
A is the full answer to your question
User Fpessoa
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4 votes
C would be the correct option because acceleration is the increase of amount or extent. 
User Jeeyoung Kim
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