For this project, select a news article with a geographic theme. As you read the article, think about the organization of the article: Is there an introduction?
What important details or supporting information does the article provide?
Is there a conclusion to the article?
After reading the article, think of a sentence or two that explains what the article is about.

Read the article again. As you read, cross out the information that is not vital to understanding the article's main idea. Using the information that remains, write a 200 word summary of the article in your own words. Your summary must include:

the title of the article;
where you found the article (online, newspaper, magazine, other);
publication date;
summary of the article's contents.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

the answer is definitely c.

i believe the answer is true.