Posted by **Desperate!!!!** on Monday, November 21, 2011 at 8:07pm.

A hot hair balloon is rising vertically 20 ft/sec while the wind is blowing horizontally at 15 ft/sec. Find the speed v of the balloon and the angle x it makes with the horizontal.

I know how to solve this problem, but I don't understand why or how you know it's a right angle.

- physics? -
**Ms. Sue**, Monday, November 21, 2011 at 8:11pm
If you want expert help, you should type your **School **__Subject__ in the appropriate box.

- Please Help!!!!!! -
**Damon**, Tuesday, November 22, 2011 at 3:33am
y axis velocity component = 20

x axis component = 15

tan x = 20/15

x = tan^-1 (1.333) = 53.1 degrees

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