Initially there is zero kinetic energy and the potential energy is mg 065kg 0075m 004875J At the end of the fall there is zero potential and 004875 J of kinetic energy. K average kinetic energy per molecule of gas J. For example if a an object with a mass of 10 kg m 10 kg is moving at a velocity of 5 meters per second v 5 ms the kinetic energy is equal to 125 Joules or 12 10 kg 5 ms 2.
Electron kinetic energy photon energy - binding energy E kinetic h v - hv 0 the energy of a photon that has the threshold frequency v 0 corresponds to the binding energy of the electronIn other words the energy of a photon at the threshold frequency equals the minimum enegry needed to overcome the forces that bind the electron to the metal.
If the mass has units of kilograms and the velocity of meters per second the kinetic energy has units of kilograms-meters squared per second squared. Kinetic Energy Equations Calculator Science Physics Formulas. When you start pushing or pulling a stationary object with a constant force it starts to move if the force you exert is greater than the net forces resisting the movement such as friction and gravity. Use the kinetic energy calculator to find out how fast that the same bullet will have to be traveling at to get its energy to 1 J.