Science Project Idea: Rainy Day Experiment for Measuring Wetness

  • Thread starter Thread starter Danielle_riv
  • Start date Start date
  • Tags Tags
    Idea Project
AI Thread Summary
The proposed science project aims to determine whether walking or running in the rain results in getting wetter, initially excluding wind factors. Key considerations include establishing average running speeds and surface area for measurement, as well as calculating the average mass and spacing of raindrops. The project is deemed feasible, especially if approached as a spreadsheet simulation to allow for adjustments. Understanding the terminal speed of raindrops and the impact of air drag is suggested as a more advanced aspect of the project. Overall, the project is considered manageable with proper planning and research.
Danielle_riv
Messages
3
Reaction score
0
I've got an idea for a science project that I thought I'd run by you. I was walking home one day in the rain and I thought to myself, would I get more wet if I walk or run? At least initially I plan on ommiting wind... if I can get a handle on it then I'll add this to the mix.
There are some problems though, obviously how fast you run will directly affect how wet you get... so I'll set it at maybe the average speed of a person my age, also the surface area will vary, again I'll set it at an average or mine something of that nature.
As I see it the way to go about this would be to find the average mass of a rain drop, maybe even how far apart they would be

Wow suddenly now that I'm typing this out I'm starting to get the feeling I might be in wayyy over my head.
Is this whole plan impossible or can i pull this off? I am in no hurry by the way I've got months
 
Physics news on Phys.org
you'll need a "top-view" surface area and a "front-view" Area,
and you'll want to look at a FEW typical speeds for raindrops.

(yes, they've reached "terminal speed" where F_grav + F_drag = 0 )

It's do-able, especially as a spreadsheet simulation so you can tweak it.

But if you start out with fundamentals like the mass of a raindrop,
predicting the terminal speed from air drag is a whole other project.
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Back
Top