Question

which of the following will the fluid resistance be least? A car moving.....

A) 50 mph into a 10 mph headwind
B) 60 mph into a 20 mph headwind
C) 70 mph into 30 mph haeadwind

Please explain!!!

Answer 1

@ProfBrainstorm help please!

Answer 2

The resistance increases with increasing relative speed of the car and air

Answer 3

okay so lets say it was tailwind though, that would be subtraction right

Answer 4

if it was a tailwind then you'd get the relative speed by subtraction, yes

Answer 5

so in your case with a headwind, which case has the lowest relative speed ?

Answer 6

okay so that one is A

Answer 7

yeah

Answer 8

thankss youuuuu!!

Answer 9

another question for ya

Answer 10

just to make sure i understand correctly..

Answer 11

which of the follwing will the fluid resistance be the smallest...

1. moving 30 mph into a 10 mph headwind
2. moving 30mph into a 10 mph tailwind
3. moving 30 mph into a 10 crosswind

its 2 correct?

Answer 12

yes, the tailwind case gives the lowest relative speed

Answer 13

SWWEEEETT

Answer 14

: )

Answer 15

thanks.. are you going to be available to answer more questions with in the hour?

Answer 16

if i tag you

Answer 17

hard to say, i'm doing other stuff as well, can't promise anything

Answer 18

are you a professor or do you work for open study

Answer 19

neither : )

Answer 20

hahah you are always on here!

Answer 21

what is the difference between the global reference system and local reference system? @ProfBrainstorm

Answer 22

no idea - it'd be better posted as a fresh question, someone else might know

Answer 23

@ProfBrainstorm Poor chap didn't even give you a medal. Here you go.

Answer 24

how do i give a medal hahaha im new to this

Answer 25

@swaschan

Answer 26

Just click best response @teddybear3354

Answer 27

i did thanks!!