a simple first year phys question tht i wan u engineers to solve (1 Viewer)

kooltrainer

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A car travels due east with a speed of 55.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain with respect to the following reference frames.

a) the car

b) the earth
 

jb_nc

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anyone that answers the q for this dude is gay
 

shannonm

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smells like first year phys quiz 1, hmm?
..hate to say it but if you need help this early your probably fucked for the rest of the course

hot tips:

1. draw a vertical line (rain relative to earth)
2. draw a diagonal line 70° to the vertical (rain relative to moving car)
3. draw a horizontal line connecting them (moving car relative to earth, 55kmh-1)
4. boom boom soh cah toa time.
 

lolokay

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no they are 100% correct :) didn't you read?
 

shannonm

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btw, it's actually worse than homework, it's from an online (3%) quiz :rofl: :rofl:
 

tommykins

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read the relative motion in ur textbook.

i think this forum beats on people more if they outright ASK a question.

if you show some sort of incentitive and show working out/ideas, we'd be more than happy to help.
 
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im sure if he actually asked for help to do the question instead of putting it as a challenge he may have mad a less hostile reception. that said he would have been berated for not knowing how to do it lol
 

kooltrainer

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yeah.. dunno whys everyone offended by this... its only a quiz question relax.. its not like cheating or anything..

and i dun think i made a challenge lol?
if u think posting a question on the net is an insult or a challenge to u .. then i have nothing to say..
 

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