anonymous
  • anonymous
Help please!!!! During a heavy rain, the drops are falling at a constant velocity and at an angle of 10.1° west of the vertical. You are walking in the rain and notice that only the top surfaces of your clothes are getting wet. What is your walking speed if the speed of the drops relative to the ground is 4.6 m/s? =>__________m/s.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@amistre64
amistre64
  • amistre64
During a heavy rain, the drops are falling at a constant velocity and at an angle of 10.1° west of the vertical. |dw:1378841565636:dw| You are walking in the rain and notice that only the top surfaces of your clothes are getting wet. What is your walking speed if the speed of the drops relative to the ground is 4.6 m/s? hmm
amistre64
  • amistre64
assuming spherical chickens in a vacuum ...

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amistre64
  • amistre64
|dw:1378841641532:dw|
anonymous
  • anonymous
walking speed is less then 5? I'ma bit confused as to how to figure that out
amistre64
  • amistre64
i dont know of any speed you can walk and only get your top wet
anonymous
  • anonymous
oh okay.. so where do we go from here to find the walking speed?
amistre64
  • amistre64
id say that if a single drop is falling, and it hit you on the top, then you have to be standing still relative to the drop ... or same speed as the drop is moving
anonymous
  • anonymous
so the speed would either be 0m/s or 4.6 m/s ?
amistre64
  • amistre64
if your speed is 0, then the angle of the drops would hit your "back" you have to be going as fast as the drop in order for it to hit you on the top
amistre64
  • amistre64
|dw:1378841958658:dw|
amistre64
  • amistre64
if you move any faster you are running into drops and hitting on the front, any slower and your getting hit in the back ...
anonymous
  • anonymous
so you have to be standing still right? in order for the drop to land directly on top of you
amistre64
  • amistre64
you have to be still relative to the drop, not to the ground
anonymous
  • anonymous
oh okay.. so that would leave your speed at 0???
amistre64
  • amistre64
|dw:1378842173965:dw|
amistre64
  • amistre64
you have to be moving the same speed as the drops, and the drops are moving at 4.2 i think it was?
anonymous
  • anonymous
it was 4.6, so my speed would be 4.6??? hah
amistre64
  • amistre64
that would be optimal ... assuming spherical chickens and all :)
anonymous
  • anonymous
4.6 m/s was wrong though.... did you count the angel of 10.1 degrees?
anonymous
  • anonymous
@amistre64
amistre64
  • amistre64
the angle is irrelevant ... a drop is moving 4.6 with respect to the ground due to the angle
amistre64
  • amistre64
if the drops is just falling straight down, then its moving 0 wrt the ground and if you stand still its just falling on top of you
anonymous
  • anonymous
okay... understanding so far.. but if the drops are moving with respect tot he ground at 4.6 m/s what would be my speed?
amistre64
  • amistre64
if its just hitting you on top, then you have to be standing underneath it; and that would only occur if you are moving at the same speed; any faster and you run into it, any slower and it runs into you
amistre64
  • amistre64
my best guess is you are moving 4.6 as well .... but you say its wrong :)
amistre64
  • amistre64
maybe its my interpretation of the ground speed
anonymous
  • anonymous
it's online homework, and it shows 4.6 being wrong...
amistre64
  • amistre64
isit falling at a rate of 4.6? or is it covering a length of 4.6
amistre64
  • amistre64
try the 4.6 as a down speed instead of an across speed, then its a trig
amistre64
  • amistre64
|dw:1378842853050:dw|
amistre64
  • amistre64
.819 m/s maybe?
anonymous
  • anonymous
that was correct. So it was just using trig then...
anonymous
  • anonymous
Thank you so much, I guess we both overthought the problem haha.!
amistre64
  • amistre64
ground speed was misleading, then ...
amistre64
  • amistre64
:)
anonymous
  • anonymous
there was one more problem i was stuck on, could you help me with it? @amistre64
amistre64
  • amistre64
maybe ...

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