# Is a high speed or low speed water droplet colder when it hits the floor? [closed]

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).

• 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. Apr 12 '17 at 19:14
• @JamalS I've got some calculations- would a photograph of those be suitable?
– Tim
Apr 12 '17 at 19:14
• No, you need to write it up, preferably using LateX. Apr 12 '17 at 19:15
• @JamalS I'm on mobile - latex is shockingly difficult to type. Why is a photograph unsuitable?
– Tim
Apr 12 '17 at 19:16
• @Tim: E.g. because text in pics are not searchable. Apr 12 '17 at 20:32