If i have no velocity in one direction then there is no

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SUMMARY

The discussion centers on the relationship between velocity and acceleration, specifically in the context of spherical polar coordinates (ρ, θ, Φ). It is established that having no velocity in a given direction does not imply the absence of acceleration in that direction. An example provided is a ball thrown vertically, which has zero velocity at its peak but still experiences gravitational acceleration (g). This highlights the importance of context in determining the presence of acceleration.

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a_helal
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if i have no velocity in one direction then there is no acceleration ?
i deal with acceleration for sphere in fluid so i use spherical polar co ordinates (ρ,θ,Φ)
i have no velocity in Φ then there is no acceleration in Φ direction ?
i want to be sure
 
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Well you can't make that conclusion...imagine you have a ball thrown vertically...at the top it has no velocity but has acceleration g...so what I mean is that the current velocity in certain direction might be 0 but that does not mean that there is no acceleration in the direction...it depends on the problem of course :)
 
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ok thanks
i understood
 

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