Thursday

February 26, 2015

February 26, 2015

Posted by **Erica** on Sunday, October 12, 2008 at 1:42pm.

I don't understand any of the responses.

You have to assume in this case the wind retards and assists with the same force, which is not usually true.

Vrg=Vrgs+Vwind

where Vrg is net velocity relative to ground, Vrgs is velocity relative to ground in still conditions, and Vwind is the velocity of the wind.

Vrgs=32

33km/time=32km/hr-Speedwind

63km/time=32km/hr+speed wind.

add the equations...

33+63)km/time=64km/hr

then time= 96/64 hr

Now solve for speed of wind in the first equation..

33km/time=32km/hr-speedwind.

- Math word problem -
**Writeacher**, Sunday, October 12, 2008 at 2:04pmErica, David, Shawn, or whoever,

Your question has been answered below. If there is**a particular part**of the response that you don't understand, please let the math teachers know what that is. To simply say you don't understand doesn't give them much to work with.

- Math word problem -
**Erica**, Sunday, October 12, 2008 at 2:39pmI am having problems with this part:

add the equations...

33+63)km/time=64km/hr

then time= 96/64 hr (I know this is 1.5)

Now solve for speed of wind in the first equation..

(is it 33km/1.5 =22)

33km/time=32km/hr-speedwind.

- Math word problem -
- Math word problem -
**bobpursley**, Sunday, October 12, 2008 at 3:14pmI assume you can add the equations.

Then solve for time.

Now to solve for wind speed

33/1.5=32-speedwind

33/1.5 -32=-speedwind

I assume you can solve that.

- Math word problem -
**Shawn**, Sunday, October 12, 2008 at 3:21pmThank you I have the answer as 10km/h.

**Answer this Question**

**Related Questions**

Help - Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in ...

English - 1. He died young. 2. He died when he was young. 3. When he was young, ...

math - A jet takes the same time to travel 2500km with the wind as it does to ...

maths - an aeroplane takes 40 minutes less to fly 3600km with the wind blowing ...

math-word problem - A plane flies with a ground speed of 160 miles per hour if ...

College Math - Im having a hard time trying to figure out how to do this problem...

Algebra 2 - An airplane flies 1050 km with the wind. In the same amount of time...

math - When an airplane flies with a given wind, it can travel 3000 km in 5hrs. ...

algebra - A plane takes 3 hours to travel 1500 miles with the wind. it can ...

11 - How do I work this problem? Flying with the wind, an airplane can travel ...