PHYSICS EQUATIONS

• density= mass/ volume
• speed= distance/ time
• acceleration= change in velocity/ time
• kinetic energy= 1/2 x mass x (speed)2
• force= mass x acceleration
• momentum= mass x velocity
• work done= force x distance
• power= work done / time
• force exerted by spring= spring constant x extension
• gravitational force= mass x gravitational field length
• gravitational potential energy= mass x gravitational field strength x height
• pressure= force/ area
• moment of a force= force x distance (the normal direction)
• charge flow= current x time
• p.d= current x resistance
• energy transferred= charge x p.d
• power= (current)2 x resistance
• energy transferred= charge x p.d
• power= potential difference x current
• energy transfer= power x time
• wave speed= frequency x wavelength
• efficency= useful output energy transfer/ input energy transfer