
Relationship between viscosity and velocity in fluid mechanics
Oct 31, 2022 · The relationship between viscosity and velocity in fluid mechanics is clarified: viscosity is an intrinsic property of a fluid that remains constant regardless of the flow velocity. …
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Confusing speed with velocity, neglecting the directional component of velocity. Overlooking that deceleration is still a form of acceleration (negative acceleration). Failing to correctly apply the …
Is velocity ever a scalar quantity? - Physics Forums
Dec 27, 2024 · I thought velocity was always a vector quantity, one with both magnitude and direction. When it came to the suvat equations, where v = final velocity, and u = initial velocity, …
Understanding Zero Velocity and Non-Zero Acceleration: Explained
Aug 1, 2009 · The key takeaway is that instantaneous velocity can be zero at specific moments, while acceleration remains non-zero, highlighting a common misconception in understanding …
Calculating Nozzle Flow Rate To work out the flow rate of water from a nozzle we need to work out the volume in a given period of time. To do this we work out the area of the nozzle and …
Escape Velocity Question: Why is the final kinetic energy = 0?
Dec 13, 2020 · The escape velocity serves as a threshold; if an object's initial kinetic energy exceeds half the product of its mass and the square of the escape velocity (), it will not return …
Average Speed vs. Velocity: Explained - Physics Forums
Jul 9, 2021 · The discussion clarifies the distinction between average speed and average velocity, emphasizing that average speed is defined as total distance divided by total time, while …
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · As far as I know, if we have a wave function as a sum of many momentum eigen function, i.e., ψ = ∑ k α k e i (k x ω t), the group velocity is the velocity of the whole wave …
Why Is Initial Velocity Not Always Zero? • Physics Forums
Aug 9, 2021 · The discussion clarifies that the initial velocity of an object is not always zero, particularly when considering the moment it leaves the thrower's hand. The term "initial …
Can you have a negative average velocity? • Physics Forums
Sep 3, 2012 · Negative average velocity is achievable in a multi-dimensional context, particularly when considering directional movement. For instance, if a vehicle travels north at 10 mph for …