Hello there!
The Centripetal force keeps an object moving in a circle or constant direction at the same speed.
Hope this helps!
Primary Circular Reactions (1-4 months): This substage involves coordinating sensation and new schemas. For example, a child may suck his or her thumb by accident and then later intentionally repeat the action. These actions are repeated because the infant finds them pleasurable.
2.4 secs I think
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