Gravity's Pull - Investigating the Effects of Gravity
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Activity Extension: "How Many [Fig] Newtons(R) in a newton?", a.k.a., 
"Newtons(R) in a newton Lite."
[Use as substitute for "Part 2: How Does Gravity Affect an Object's 
Movement?", RSLG pp. S30-32.]

See the following background notes ...
http://www.wsanford.com/~wsanford/gr8ps/04_red/06_work_made_easy/newtons/
... specifically ...
Newtons-in-a-newton_Ver2.txt and gravitys_pull.txt (original verson of 
RSLG Ver.1 activity)

http://www.nabiscoworld.com/newtons/ (incl. graphics and "Nutrition 
Facts")
Varieties/NEWTONS - COOKIES - FIG NEWTONS 16oz/Nutrition Info
Nutrition Facts:
Serving Size 31g [2 cookies; 1 cookie = 15.5g]
Servings per Container about 15

Note: 30 cookies per 16oz pkg (1 lb); 16oz = 454g total weight of pkg 
(actually mass), according to pkg label; 453.59g or 0.45359kg (by 
conversion, 16oz = ? g), 465g (by calculation: 15.5 g/cookie x 30 
cookies/1 = 465g).

Problem: How Many [Fig] Newtons(R) in a newton?
Solution:

1. If there are 30 cookies per (16oz) package, then how many cookies are 
in each serving?

A)
30 cookies (per pkg) / 15 servings = 2 cookies per serving

2. Given the serving size in grams (g), calculate the mass of a single 
cookie, expressed in kilograms (kg).

A)
31g (serving size) / 2 (cookies per serving) = 15.5g per cookie
15.5g = 0.015kg <-- mass of a single cookie

3. What is weight of a single cookie, expressed in newtons (N)?

A)
0.015kg x 9.8 m/s(2) = 0.147 kg-m/s(2) or 0.147 N <-- weight of a single
cookie
[Note: Focal point of Part 1 of lab activity is weight(N) is ~10x greater
than mass(kg) or vice versa, i.e., mass(kg) is ~1/10 weight(N), see RSLG
p. S27, e.g., 0.147N = 0.147kg-m/s(2); 0.147 kg-m/s(2) / 9.8 m/s(2) = 
0.015kg]

4. How many cookies have a weight equal to one newton (1 N)?

A)
1 N / 0.147 N/cookie = ~6.8 cookies <-- the answer!

For Further Thought...
-------------------

A. Convert your weight from pounds (lb) to newtons (N).
Conversion Factor: 1kg = 2.2 lb
Dimensional Analysis: ? lb/1 x 1 kg/2.2 lb = _____ kg; _____ N

A) Answers will vary.

B. Determine your weight (in pounds & newtons) on the Moon (Note: Your 
weight on the Moon is ~1/6 your weight on Earth): _____ lb; _____ N

A) Answers will vary.

--
Graphic of 16oz pkg Fig Newtons
00527cl.gif = 10.0 KB 164x164x256
Source: Varieties

==
http://en.wikipedia.org/wiki/Fig_Newton