Relative Velocity (Two-Demensional Motion and Vectors)-hw help

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SUMMARY

The discussion centers on a physics problem involving relative velocity in two-dimensional motion, specifically addressing a scenario where a research plane flies against a wind speed of 300 km/h while maintaining a speed of 450 km/h relative to the wind. The key equation to use is Vac = Vab + Vbc, where Vac represents the velocity of the plane relative to the ground, Vab is the velocity of the plane relative to the wind, and Vbc is the wind speed. To determine the time taken to travel 250 km, the effective speed of the plane against the wind must be calculated, which is 450 km/h - 300 km/h = 150 km/h. The time can then be found using the formula time = distance/speed.

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Homework Statement


George V Coast in Antartica is the windiest place on earth. Wind speeds there can reach 300 km/h. If a reasearch plane flies against the wind with a speed of 450 km/h relative to the wind, how long does it take the plane to fly between two reasearch stations that are 250 km apart?


Homework Equations


It says in our notes we should be using the equation
Vac=Vab+Vbc



The Attempt at a Solution


I don't know what the wind speed is relative to. Also the whole finding time thing is totally throwing me off, because there is no place for time in the equation. I just did a few problems just like this without time in it, and had no problem. But this problem, and the rest of them on my worksheet all use time, and I don't see how that fits into the equation I gave above.
 
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Maybe there are other equations. What does velocity mean? Doesn't it involve time?
 
dlgoff said:
Maybe there are other equations. What does velocity mean? Doesn't it involve time?

Thats true. Although it will make the problem a lot more complicated, I could probably try to solve it now.

More help is needed though =]
 

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