physics revision

physics revision

1. equations you need to know

   • power equations
     • power = energy transferred / time
       • S
       • j
       • w
     • power = work done / time
       • W
       • J
       • S
   • quantities
     • weight = mass x gravitational field strength
       • n/kg
       • kg
       • N
     • distance travelled = speed x time
       • M
       • M/S
       • S
   • work done = force x distance
     • J
     • N
     • m
   • Force applied to a spring = spring constant x extension
     • M
     • N/M
     • N
   • moment of a force = force x distance
     • NM
     • N
     • m
   • Gravitational potential energy = mass x height x gravitational field strength
     • KG
     • M
     • N/KG
     • J
   • circuits