Timeline for Why doesn't the magnitude of velocity of an object in circular motion increase?
Current License: CC BY-SA 4.0
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| Dec 31, 2018 at 23:15 | comment | added | David White | @LuoZeyuan, there is one more thing to consider. Acceleration is defined as change in velocity with respect to time. Velocity is a vector quantity having both magnitude and direction. The usual way of defining acceleration involves a change in magnitude divided by a change in time. There is also another way to define acceleration, and that is a change in direction divided by a change in time. Thus, centripetal acceleration can have a constant speed but still be an acceleration, because the direction of motion is continuously changing. | |
| Aug 18, 2018 at 7:15 | comment | added | Luo Zeyuan | Yes, at that instance, the parallel component of the velocity of the ball is unchanged. But shouldn't the overall velocity increases because of the perpendicular component of velocity introduced by the centripetal acceleration? | |
| Aug 18, 2018 at 7:07 | history | answered | Farcher | CC BY-SA 4.0 |