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 …

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...

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 of the whole …

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 …

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 of the …

Feb 13, 2017 · Homework Statement When an object is moving in a vertical circle attached to a string, it can withhold a maximum tension at the bottom of it's path. Derive an expression for the maximum …

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 …

Sep 9, 2008 · how can we say that torque is equal to power / angular velocity though we know that torque is equl to I x (change of angular velocity over time ). and how can we relate torque to (angular …

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 …

Aug 8, 2018 · I have seen so many questions and confusion about the difference between angular velocity/speed and angular frequency. Usually, answers were always given in the context of uniform …