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 · The units are KE in joules, mass in kilograms, and velocity in meters per second. If you round to one significant figure this go-carts KE is 50-joules. In science What is a …
Confused about the definition of a Joule - Physics Forums
2016年5月2日 · >1Kg traveling at 1m/s would have a KE of 1Joule It looks like you're taking mass*velocity and concluding this is the energy. Actually, this is the momentum (mass x …
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 · First, what are the units for k e? Then, plug them into your equation for lambda and solve out. What you are left with is the units for lambda. I'd recommend you show your …
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 · Don't marry units to a particular equation that happens to involve quantities with units. The constants that relate the variables in different contexts may be different. Note that …
Why is kinetic energy 1/2mv^2 instead of mv^2? - Physics Forums
2009年3月26日 · The definition of joules, th unit of energy is the 1 J = 1 kg * m2/v2. And that 1 joules is the amount of energy needed for the work done by one Newton traveling one meter. …
What is 'K' in K=1/4pi Epsilon 0? - Physics Forums
2011年8月27日 · Hey So for those that don't know, I'm reading this from Atomic Physics, basically where they teach you how the size of a nucleus was determined by shooting...
Can relativistic mass be a useful concept - Physics Forums
2013年12月30日 · Can "relativistic mass" be a useful concept Many basic texts on relativity refer to the mass variation equation: m= gamma mo [gamma =...