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Are the jokes about toddle's head etc. really necessary? 62.137.134.96 ( talk) 09:10, 22 October 2008 (UTC)
In the section about acceleration the statement should be that the acceleration is the instantaneous change in velocity. And it is interesting that nobody is interested in the rate of change in the acceleration value evidently because we haven't found a physical process requirement for it. WFPM ( talk) 18:26, 14 March 2012 (UTC)
S = S(zero) + (V1 x t) + (a x t^2)/2 + ?. Of course that's for constant acceleration. WFPM ( talk) 16:48, 18 March 2012 (UTC)
I added some elements to the table to make it include exactly what is usually mentioned in first year college-based physics textbooks. This page ("Linear motion") is a strange place for this table, but it must get visited often because the google keywords "wiki linear rotational motion" get me to this page.
In contrast, the more appropriate title, Linear-rotational_analogs, seems to have too much material to be pedagogically useful.-- guyvan52 ( talk) 06:08, 10 July 2014 (UTC)
It seems this could be cleaned up, just some improvements in the wording. I'm not technically qualified to pass on this.
"There are two types ...." and the types are named, "rectilinear" and "curvilinear". Then the next sentence starts talking about "linear", and this noted earlier as "also called", but the difference would be confusing.
As far as "curvilinear" is concerned, that's the only place in the article that word appears. In the second Displacement paragraph, it seems to be equated with "rotational". Again, let's match the terms.
The language following this, "The displacement of an object cannot be..." as far as I know (non-physicist here) applies to both types, so should be a separate paragraph. Lontjr ( talk) 11:57, 14 May 2016 (UTC)
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It is a sclar quantity Speed never be zero 171.51.146.67 ( talk) 04:02, 24 April 2022 (UTC)
The measurement units listed for acceleration, jerk, and jounce are incorrect. They are written as if they are some power of a reciprocal millisecond instead of meter times a power of a reciprocal second. The rules of usage for SI require that the product of two units be expressed explicitly by a space or centered dot between consecutive unit factors. For acceleration the unit is m s⁻² or m⋅s⁻² or m/s², not ms⁻². For jerk the unit is m s⁻³ or m⋅s⁻³ or m/s³, not ms⁻³. For jounce the unit is m s⁻⁴ or m⋅s⁻⁴ or m/s⁴, not ms⁻⁴. As a unit, m juxtaposed with s [no intervening space nor centered dot] is required to be interpreted as millisecond. The measurement unit for velocity and speed is done correctly. 2603:9001:700:2E96:244C:F368:7E36:8E30 ( talk) 16:50, 19 July 2022 (UTC)
The following comment was inserted into the article on 24 December from IP address 128.118.7.108.
I will erase it from the article. Dolphin ( t) 01:12, 25 December 2022 (UTC)
There are two types of waves longitudinal and transverse Longitudinal waves appear in springs and strings Transverse waves appear in water ,air etc Waves have got pulse and amplitude •Pulse is the effect of a single vibration travelling through a medium •An amplitude is a maximum displacement Super position >It occurs when two pulses meet to occupy the same space at the same time PULSES ON THE SAME SIDE:Constructive interference PULSES ON OPOSITE SIDE:Destructive interference. 41.116.144.52 ( talk) 11:36, 8 February 2023 (UTC)
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V→f=V→i+a→t
d→=V→it+½a→t²
V→²f=V→²i+2a→*d→
d→=½(V→f+V→i)t
In equations, vectors were often represented as bolded letters to distinguish them from scalars. With the appropriate notation disclosed in recent years, arrows are now placed on top of letters to represent vectors. Vectors are mathematical objects that are comprised of a magnitude and direction. The arrow on top of a letter indicates the direction in which the vector is pointing. Additionally, the length of the arrow corresponds to its magnitude.
Reference Source: 1.1: Vectors.” Physics LibreTexts, 30 June 2022, phys.libretexts.org/Courses/University_of_California_Davis/UCD%3A_Classical_Mechanics/1%3A_Motion/1.1% Saul Shad ( talk) 00:08, 13 December 2023 (UTC)