physics equations

• Ex


  Kinetic energy
• Ep


  Gravitational potential energy
• E


  Elastic potential energy
• W


  Work done (Energy transferred)
• UO


  Useful OUT (energy or power)
• TI


  Total IN (energy or power)
• V


  Voltage (potential difference)
• No equations in Chapter 4
• momentum = mass x velocity
• impulse = force x time
• force = change in momentum / time taken to produce the change
• power = force x distance moved per second
• force = mass x acceleration
• power = energy / time
• work done = force x distance moved
• power = energy transferred per unit time
• work done = force x distance moved by object acted on
• work done = force x distance
• energy transferred = power x time
• energy = power x time
• Energy stored in an object = energy transferred + work done on it - energy lost by it
• energy transferred = work done + kinetic energy gained by object
• pressure = force / area
• Ex


  m v²
• E₂


  mgh
• Elastic potential energy


  =%x spring constant x extension²
• Work done (Energy transferred)

  Force x displacement
• Physics Equations


  • Kinetic energy
  • Gravitational potential energy
  • Elastic potential energy
• Kinetic energy


  • %x mass x velocity²
• Gravitational potential energy


  mass x gravitational field strength x height
• Efficiency


  Useful OUT (energy or power) / Total IN (energy or power)
• Charge


  Current x time
• Voltage (potential difference)


  Current x resistance
• Power


  Current x voltage (potential difference)
• Power


  Current² x resistance
• Energy (transferred or work done)


  Power x time
• Energy


  Charge x voltage (potential difference)
• Mass


  Density x Volume
• Energy


  Mass x specific heat capacity x temperature change
• Energy


  Mass x latent heat