Calculating Kinetic Energy in English Units - Physics Forums
2016年1月22日 · Homework Statement An object has a mass of 10 lbm. b. Find the change in kinetic energy ft·lbf when its velocity decreases from 50 mph to 15 mph. Homework Equations …
What are the units of KE and PE? - Answers
2023年8月11日 · I presume we're talking about Kinetic and Potential Energies here, if so the SI unit is joules. Anything dealing with energy such as KE, PE, GPE, ME have the same SI unit …
Confused about the definition of a Joule - Physics Forums
2016年5月2日 · so, the KE of 2Kg moving with a speed of 1m/s is 1 Joule. Maybe you can clarify some more of the KE units which are Joules and the KE unit equation which also are in Joules …
How is the formula Kinetic Energy=1/2mv^2 derived? - Physics …
2006年6月27日 · My form of derivation for KE. Assume a mass at rest picks up speed after some time t. Let u and v be initial and final speed of the mass. Using kinematics, v^2 = u^2 + 2as u = …
Units of Charge, ke*Q, -ke*Q/R, 2*ke*λln R & -2*ke*λ - Physics …
2011年2月13日 · The units for k e should be kg*m/s 2 C 2 k e times a C 2 (incorrect, fixed below) yields a Newton. AH Correction: kg*m 3 /s 2 C 2 forgot that there is a 1/r 2 term in the equation …
How Do I Calculate Velocity from Mass and Kinetic Energy?
2006年1月28日 · The equation KE=1/2mv^2 says that the kinetic energy is equal to half of the mass of the object times the object's velocity squared. So you need to solve for velocity (v).
Why is the Velocity equal to joules per kilogram? - Physics Forums
2017年2月9日 · Homework Statement Calculating the rms speed of an N2 molecule. The units I end up with are J/kg and this is equivalent to Velocity. my question is why? Homework …
Why is kinetic energy 1/2mv^2 instead of mv^2? - Physics Forums
2009年3月26日 · To get the force, you would have to do 5 kg x 9m/s 2 Then to get energy, that force times distance. So if it traveled 5 meters. The kinetic energy should be F (5kg x 9.8 m/s …
What is 'K' in K=1/4pi Epsilon 0? - Physics Forums
2011年8月27日 · Physics news on Phys.org Cutting-edge experiments reveal 'hidden' details in transforming material with implications for faster microelectronics An experimental test of the …
Can relativistic mass be a useful concept - Physics Forums
2013年12月30日 · You stated that: Total energy = rest energy + KE. Agreed if the equation is to be expressed in terms of units such as Joules. But surely this is the same as Total mass =rest …