1. 2.6: Related Rates
(Part 2)
Greg Kelly, Hanford High School, Richland, Washington

2. Objectives Find a related rate.
Use related rates to solve real-life problems.

3. Speed is 500 mph Airplane Problem (example 4):
An airplane is flying on a flight path that will take it directly over a radar tracking station. If c is decreasing at a rate of 400 mph when c=10 miles, what is the speed of the plane?
Find:
Given: c x
Speed is 500 mph

4. Hot Air Balloon Problem:
Given:
How fast is the balloon rising?
Find:

5. Hot Air Balloon Problem:
Given:
How fast is the balloon rising?
Find

6. Lamp Post and Search Light
More Sketchpad Demos
Lamp Post and Search Light

7. Truck A travels east at 40 mi/hr. Truck B travels north at 30 mi/hr.
Truck Problem:
Truck A travels east at 40 mi/hr.
Truck B travels north at 30 mi/hr.
How fast is the distance between the trucks changing 6 minutes later? B A

8. p Truck Problem: Truck A travels east at 40 mi/hr.
Truck B travels north at 30 mi/hr.
How fast is the distance between the trucks changing 6 minutes later? B A p

9. Homework
2.6 (page 155)
#25, 28, 29
#31, 33, 44