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Dave Doe wrote:
Try this for a brain scrambler. Think about a tire on your car, driving down the highway. At the point where the tire contacts the ground, it's speed is zero. 180° away, at the top, it is moving forward at twice the speed of the car. Negative - yer forgetting centripetal force. http://www.wordiq.com/definition/Centripetal Well, I'm impressed that you know of the existence of centripetal force. But in what possible way do you think it negates the comment about the speeds (relative to the ground) of points at the top and bottom of the tire on a moving car? -- Alex -- Replace "nospam" with "mail" to reply by email. Checked infrequently. |
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