# Kinetic and Potential Energy Stores P1.4 & 5

?
• Created by: NKaiya
• Created on: 03-12-20 16:34
• Kinetic and Potential energy stores P1.4 & 5
• Gravitational Potential Energy
• Energy is transferred to the Gravitational Potential Energy (G.P.E) Store because it requires work to raise an object
• The G.P.E store depends on the objects mass, height and gravitational field strength. The higher the object is lifted, the more energy is transferred to the store.
• The formula is G.P.E (J) = mgh - mass (kg) x gravitational field strength (N/kg) x height (m)
• Energy lost from G.P.E store = Energy gained in the kinetic energy store
• Kinetic Energy
• Anything moving has a kinetic energy store. Energy is transferred to this store when the object speeds up and away when the object slows down.
• Kinetic Energy Store depends on the objects mass and speed. The greater the mass and the faster it's going the more kinetic energy
• The formula is KE(J) = 1/2mv² - 1/2 x mass(kg) x speed² (m/s)
• Elastic Potential Energy
• Stretching or squashing an object can transfer energy
• The formula for E.P.E = 1/2ke² = 1/2 x spring constant (N/m) x extension² (m)