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...

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, I …

Jul 20, 2025 · As far as I know, if we have a wave function as a sum of many momentum eigen function, i.e., ##\psi=\sum_k \alpha_k e^ {i (kx-\omega t)}##, the group velocity is the velocity …

Oct 31, 2022 · The viscous force within a fluid will depend on the velocity gradient (aka shear rate) within the fluid. That does not mean that the viscosity is a function of velocity. Viscosity is the …

Jun 24, 2016 · Velocity divided by acceleration does not yield distance, as the units do not align correctly. The discussion highlights a common confusion between the symbol 's' representing …

Sep 3, 2012 · This relates to speed, not velocity. Displacement and speed are non-vector quantities, whereas position and velocity are vector quantities. It is impossible to have a …

Jul 9, 2021 · Though average speed over a finite interval of time is greater or equal to the magnitude of the average velocity, Instantaneous speed at an instant is equal to the magnitude …

Sep 6, 2013 · To find angular velocity (ω) from torque (τ), the relationship τ = Iα is used, where I is the moment of inertia and α is angular acceleration. Angular acceleration can be expressed as …

Feb 10, 2022 · Momentum is a vector quantity that depends on both mass and velocity, with greater force required to change the motion of more massive bodies. To achieve the same …

Apr 6, 2007 · The squaring of velocity in the kinetic energy equation arises from the work-energy theorem, where work is calculated as force times distance, leading to a quadratic relationship …