**Answer: **D

**Step-by-step explanation: **Kinetic energy is impacted by mass and velocity. The penny is traveling fastest right before it hits the flour (objects pick up speed as they fall). Therefore, D is when KE is greatest.

I'm almost positive that the answer is 60 miles an hour but if I'm wrong I'm sorry. I think it's 60 cause in 4 hours they drove 240 miles and 240 divided by 40 is 60

**Answer:**

-5 = <em>v</em>

**Step-by-step explanation:**

First you take the positive five and subtract it from -20 making it -25. Then you divide -25 by positve 5 and you get -5 making your answer -5 = <em>v</em>

Given:

grams of fat : 34 grams TO weight of woman : 102 pounds

grams of fat : ? TO weight of woman : 180 pounds

This is a proportion problem: 34 grams to 102 pounds.

We first have to convert a unit of measure to another to maintain uniformity of measure. let us convert pounds to grams:

102 pounds * 453.592 grams / pound = 46,266.384 grams

180 pounds * 453.592 grams / pound = 81,646.560 grams

34 grams to 46,266.384 grams = x grams to 81,646.560 grams

proportion: a:b = c:d where ad = bc

34 grams * 81,646.560 grams = x * 46,266.384 grams

2,775,983.04 grams² = x * 46,266.384 grams

2,775,983.04 grams² ÷ 46,266.384 grams = x

**60 grams = x **

**A woman weighing 180 pounds should eat 60 grams of fat to maintain her weight.**