We all know by now what centripetal force is but to refresh our minds before the big day I feel like I have to enforce this topic since I've received questions about it. First of all we all SHOULD know that the default pathway that every object takes is straight unless there's an outside force that disrupts that pathway. And second that even when an object during circular motion is at constant speed it would still be accelerating. In the picture above when the car is doing a turn, acceleration is pointing towards the center but if it was to like loose control or not have a driver to touch the steering wheel to make that turn the car will just go straight up out of the street turn pathway.
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