A raindrop of mass 44.9 mg forms inside a cloud, and then starts to fall from a height of 1,263.7 m directly above a point P on the ground. As it falls, it is blown about by the wind and eventually hits the ground with a speed of 8.6 m/s a distance 310.6 m from point P. How much extra energy has it gained, or lost, during its journey to the ground? Enter the amount in Joules as a positive number if it gained energy, and a negative number if it lost energy. Joules is equal to N.meter or Kg.m^2.s^-2