1.

The motion of A, B, C, and D are plotted on a distance-time graph below. Study the graph and answer the following questions: (a) Who is traveling fastest? (b) Who is at rest? (c) Who is moving in non-uniform motion? (d) Who is accelerating with time? (e) Who is moving slowest?

Answer»

Coal is a combustible black or brownish-black sedimentary ROCK with a high amount of carbon and hydrocarbons. Coal is classified as a NONRENEWABLE ENERGY source because it takes millions of years to form. Coal CONTAINS the energy stored by PLANTS that lived hundreds of millions of years ago in swampy forests.



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