
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · The discussion centers on the concepts of phase velocity and group velocity in wave functions, specifically in the context of quantum mechanics. The group velocity is defined as \ (v_g = …
Understanding Zero Velocity and Non-Zero Acceleration: Explained
Aug 1, 2009 · I heard it would be possible to have zero velocity & non zero acceleration (I know the opposite situation where there is velocity (constant), but zero acceleration). Could anyone please …
Average Speed vs. Velocity: Explained - Physics Forums
Jul 9, 2021 · Investigate the relationship between speed, velocity, and acceleration in motion analysis Students of physics, mathematicians, and educators seeking a deeper understanding of motion …
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...
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 then multiply it by …
Can you have a negative average velocity? • Physics Forums
Sep 3, 2012 · I understand that it's possible to have a negative instantaneous velocity, but I'm wondering if it's possible to have an negative average velocity. For example, let's say you start heading north at …
Difference between angular velocity and angular frequency
Aug 8, 2018 · The discussion clarifies the distinction between angular velocity (ω v) and angular frequency (ω f). Angular velocity is defined as the instantaneous rate of change of angular …
Diving Board Jump: Analyzing Velocity and Height - Physics Forums
Sep 13, 2013 · Homework Statement A diver jumps off a 3.00 meter high diving board with an initial velocity of 1.75 m/s vertically upward. a) What is the diver's veolcity when she reaches the water? …
At What Velocity Does the Universe Expand and Can It Be Faster than …
Feb 9, 2016 · You may sometimes see statements that cosmological inflation caused the universe to expand faster than c, or that the edge of the observable universe occurs at the place where the …
Numerade
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 vector …