Jul 20, 2025 · The discussion centers on the concepts of phase and group velocity in wave functions, particularly in the context of quantum mechanics. It clarifies that the group velocity, …

Mar 12, 2009 · If I have a velocity vector V in some coordinate system. Is there anything special that needs to be done to convert V -> V' ? Basically, I have a matrix (N x 3) in north-east-down …

Dec 3, 2009 · whts the relation of velocity V and electric field E? i only know about E=F/e(relation of electric field E and Force F) any one like to answer?

Aug 1, 2015 · I know that F=ma which give the units of kg.m/s/s (in SI units) but can force also be expressed as mass flow rate times velocity which also has the same units? Example: water …

May 13, 2009 · Homework Statement calculate the final velocity of an object sliding across a surface with a coefficient of friction of 0.2, a distance of 3m, an initial velocity of 50m/s and the …

Jan 16, 2015 · Homework Statement If a ball is dropped down a ramp of any shape, will the acceleration always be 9.8 assuming there is no friction. Homework Equations I...

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, …

Nov 28, 2021 · Here's where I got the questions: These are from a worksheet I downloaded online: Answer Key The answer key says that the answer to the first question is 500J and for …

Jul 12, 2017 · Homework Statement Given the Speed of vehicle at any instant (say 30 meters/s) and Heading of a vehicle (say 270 degrees ) , how can i find the velocity...

Apr 6, 2007 · I believe it was Newton who first proposed kinetic energy as being proportional to mass times velocity. Liebniz further refined the relationship by stating that the velocity should …