I have two water droplets, about 2mm across, one with an initial velocity of $4ms^{-1}$ towards the ground, which is 5 metres away. The other has an initial velocity of $0ms^{-1}$. Both have an average temperature of 50°C.

I'm not sure how I can calculate the energy lost to air resistance, and how much of this energy is lost as a reduction in acceleration, and how much is a reduction in temperature.

I've calculated the speeds when the drop hits the floor assuming there is no air resistance:

Which droplet is colder? (This is not a homework question).

  • 1
    $\begingroup$ It may not be a homework question but it is formulated like one and you have shown no effort to tackle the problem. Voting to close. $\endgroup$
    – JamalS
    Apr 12 '17 at 19:14
  • $\begingroup$ @JamalS I've got some calculations- would a photograph of those be suitable? $\endgroup$
    – Tim
    Apr 12 '17 at 19:14
  • $\begingroup$ No, you need to write it up, preferably using LateX. $\endgroup$
    – JamalS
    Apr 12 '17 at 19:15
  • $\begingroup$ @JamalS I'm on mobile - latex is shockingly difficult to type. Why is a photograph unsuitable? $\endgroup$
    – Tim
    Apr 12 '17 at 19:16
  • $\begingroup$ @Tim: E.g. because text in pics are not searchable. $\endgroup$
    – Qmechanic
    Apr 12 '17 at 20:32