Paper 1 equations

• Work done = force x distance
• kinetic energy = 0.5 x mass x speed squared
• gravitational potential energy = mass x gravity x height
• power = energy transferred / time

  power = work done / time
• efficiency = output / input
• charge = current x time
• potential difference = current x resistance
• energy transferred = charge flow x potential difference
• density = mass / volume
• power for electricity:

  power = potential difference x resistance

  power = current squared x resistance