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  1. 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 = …

  2. 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 …

  3. 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 …

  4. 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...

  5. 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 …

  6. 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 …

  7. Torque & Power: Understanding Angular Velocity - Physics Forums

    Sep 9, 2008 · The discussion clarifies the relationship between torque, power, and angular velocity, emphasizing that power is equal to torque multiplied by angular velocity (P = τ × ω). It addresses …

  8. Is Velocity Increasing or Decreasing with Negative Acceleration?

    Aug 15, 2017 · Velocity is made up of two components magnitude (speed) and direction. So, in the simplest case, if the magnitude changes but the direction is the same, then I would think it proper to …

  9. 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 …

  10. Is Velocity Zero if Displacement is Zero? • Physics Forums

    May 16, 2015 · The concept of instantaneous velocity is also mentioned, which applies to specific moments along the path. This reinforces the principle that average velocity is zero when …