Posted by **Denzel** on Sunday, October 17, 2010 at 10:34pm.

A hot air balloon rising straight up form a level field is tracked by a range finder 500ft from the liftoff point. At the moment the range finders elevation ange is pi/4, the angle is increasing at 0.14 rad/min. How fast is the balloon rising at that moment?

- calculus -
**Reiny**, Sunday, October 17, 2010 at 10:49pm
h/500 = tan Ø

h = 500 tan Ø

dh/dt = 500sec^2 Ø dØ/dt

sub in the given information

- calculus -
**pammy**, Sunday, October 24, 2010 at 3:05pm
the answer is 140 m/sec

you can view the answer at

this is a website, it wont let me post

hutch.k12.mn.us/userFiles/

File/4.6_Related_Rates_Day_1_c

.pdf

## Answer This Question

## Related Questions

- calculus - a hot-air balloon rising srtaight up from level field is tracked by a...
- Calculus I - Problem: A hot air balloon rising straight up from a level field is...
- calculus - A hot air balloon rising vertically is tracked by an observer located...
- Calculus - A hot air balloon rising vertically is tracked by an observer located...
- Math - A hot air balloon is rising vertically. From a point on level ground 125 ...
- Calc - 2) A hot air balloon rising vertically is being tracked by an observer on...
- science - A sandbag falls from a hot air balloon that is rising with a constant ...
- physics - 1.A hot air balloon is rising upwards at a constant velocity of 5m.s ...
- Accounting - E6-9 (a,b) Tiger Golf Accessories sells golf shoes, gloves, and a ...
- trig - As a hot-air balloon rises vertically, its angle of elevation from a ...

More Related Questions