Physics Work Unit I

  • Mechanical energy - energy possessed by an object due to its motion or position -unit Joule, equation: TME= PE + KE

  • Symbol ME

  • Example: barbell lifted high on bookshelf

  • Kinetic energy - energy of motion

  • Unit -joule symbol: KE

  • equation: KE=0.5*m*v 2 example: windmills moving

  • Gravational potential energy-. Energystandmobjectas result of vertical position height symbols: PEG. Equation: PE= m*g*h*grav

  • Work-when force act upon an object to cause displacement of

  • Symbol: W unit: joule

  • Equation: w=F*d*cos

  • Example: horse plowing through field, pushing grocery cart, dogs pushing sleigh

  • Power: rate at which work is due. Symbol: P Unit: watt (N), work/time

  • Potential energy

  • Definition: energy stored in object