Timeline for is a positive acceleration indication that velocity must be positive?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jun 3, 2021 at 0:04 | comment | added | Involute | I imagine there to be little advances in the fields of science and engineering debating on something as rigorous as the definition of velocity! It’s not hard to grasp, and it is used prevalently in engineering!: if positive velocity means an object is travelling, say, to the right, then of course a larger positive number means the object is going faster to the right. If the velocity is negative, it means the object is travelling to the left. If it is a larger negative number (further from zero), it is going faster to the left. Where do you fail to understand this? | |
| Jun 2, 2021 at 17:12 | comment | added | r13 | I guess you usually say - The velocity during my drive to work was 30 mph, and from work back to home was negative 40 mph. Well, I have no further comment. | |
| Jun 2, 2021 at 17:07 | comment | added | r13 | Physics is always up to debate when a physical phenomenon can't be clearly explained. The word "fast" has a positive (+) sense, so do you mean negative velocity means how "slow" an object moves in the same direction, or how "fast" in the opposite direction? | |
| Jun 2, 2021 at 16:26 | comment | added | NMech | Honestly, if we can't agree that positive velocity is how fast an object is moving in one direction, and the physical meaning of negative velocity is how fast an object is moving in the opposite direction, then I am afraid there is not much to debate on an engineering level. | |
| Jun 2, 2021 at 15:31 | comment | added | r13 | Here is a debate on the "terminology" forum you might want to have a look, physics.stackexchange.com/questions/189600/…. | |
| Jun 2, 2021 at 15:21 | comment | added | r13 | You shall review the statement - ".means that the velocity is always greater than zero (since the initial velocity is V0)..." Is V = Vo + at always yield result greater than zero? Not from your comments insisting velocity can be negative, and it has a physical meaning though. | |
| Jun 2, 2021 at 11:09 | vote | accept | Adham Hussin | ||
| Jun 2, 2021 at 11:09 | |||||
| Jun 2, 2021 at 6:09 | history | answered | NMech | CC BY-SA 4.0 |