In uniform circular motion, we have an acceleration and the speed doesn't change. But in projectile motion the speed does change under constant acceleration. Why are they both classified as uniform acceleration phenomena?

Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter6: Circular Motion And Other Applications Of Newton's Laws
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Answer the following concisely, in no more than three sentences.

In uniform circular motion, we have an acceleration and the speed doesn't change. But in projectile motion the speed does change under constant acceleration. Why are they both classified as uniform acceleration phenomena?

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