What is happening to an object when it has negative acceleration?

1 answer:

3 0

When an object is speeding up, the acceleration is in the same direction as the velocity. Thus, this object has a positive acceleration. In Example , the object is moving in the negative direction ( has a negative velocity) and is slowing down.

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valentina_108 [34]

Answer:

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the answer for question 9 is the second one

Explanation:

question 8 - each cell is differentiated by the DNA, as DNA is the structural and functional unit of the cell, and gives it all of its own unique qualities

question 9 - nucleotides are the part of the body that sort of encode information and instruction from the center of the cell, the nucleus. and the nucleus contain the important DNA, so it is self explanatory

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Marizza181 [45]

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The answer should be law

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Diagram of the evolution of land plants?

frez [133]

The diagram for evolution of plants in the 4 stages is attached below.

Explanation:

The plants evolution has 4 main periods:

A. 1st Period of Plant Evolution

About 420 million years ago, plants evolved from algae. Formation of cuticle was the first terrestrial adaption.

B. 2nd Period of Plant Evolution

Abut 400 million years ago, the diversification of vascular plants came into being. The early vascular plants lacked seeds.

C. 3rd Period of Plant Evolution

This was around 360 million years ago, that the seed evolved. The plants had seeds, but they did not have any covering, so they were called naked seeds. These plants were gymnosperms.

D. 4th Period of Plant Evolution

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Microorganisms are diverse, why are they groped together

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Microbes are classified into various groups on the basis of their characteristics to make the study easier.

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