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____ [38]
3 years ago
12

Is there a difference in speed between a car going forwards at 5m/s and a car moving backwards at 5m/s

Biology
1 answer:
slava [35]3 years ago
6 0

There is NOT a difference in speed between a car going forwards at 5 m/s and a car moving backwards at 5 m/s.

Speed is just the rate of change of the position of an object. It is calculated by dividing the change in position (distance traveled) by the time it takes to move said distance.

The distance between the two points is always positive because the direction does not matter.

However, if we are looking for the velocity, the direction DOES matter. In this example, the velocity moving forwards is 5 m/s while the velocity moving backwards is -5 m/s.

In other words:

<em>Speed </em>is looking at the <em>magnitude</em>

<em>Velocity </em>is looking at the <em>magnitude </em><em>and </em><em>direction.</em>

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C

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The reproductive system in both males and females are controlled and regulated by the interaction of hormones from the hypothala
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The reproductive system in both males and females are controlled and regulated by the interaction of hormones from the hypothalamus and pituitary glands with hormones from the reproductive organs. How do these hormones affect the development of male and female reproductive systems

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2 years ago
Read each description below and determine whether or not it describes a function or property of cerebrospinal fluid. Identify wh
Ostrovityanka [42]

Answer:

Produced by the choroid plexus -T.This is the major secretion site.It is also produced in smaller quantities in the interstitial compartment.

Blocks blood toxins from brain tissue-F, that is the job of  the blood brain barrier(BBB).

Supplies oxygen to the brain tissue-T.This gas is dissolved  in the CSF together with CO2 for distribution among nervous tissues by the CSF

Maintains the concentration of glycine surrounding the brain-T

Found in the ventricles of the heart and brain-False,it does not reach the heart ventricles.This are occupied by blood.

Prevents concussions-T

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Effectively decreases the brain's weight-T It reduces the weight of the brain.This is done by the buoyancy it provided for the brain.

Compared to levels in the blood plasma, the CSF is higher in glucose-F.This is wrong, the glucose of the blood plasma is higher.But equal sodium ion,more chloride in CSF, and less protein.It s levels is a relefection of blood glucose.Although it may lag 2-4hrs in the CSF.

It prevents concussion,(T)and and the contraction of cardiac muscles propels its movement(T).

Explanation:

7 0
3 years ago
Compare and contrast. what three elements do all macromolecules share? explain how the chemical properties of lipids, nucleic ac
inn [45]

All macromolecules have carbon atom and the hydrogen atom.

<h3>What are macromolecules?</h3>

The term macromolecules refers to the molecules that are composed of smaller units. These smaller units are called monomers. The macromolecules that we are concerned with here are the macromolecules that could be found in the human body.

The biological macromolecules are often very large as we can see. This is because the number of units that are joined to form the macromolecules are usually very much. There are thousands of monomer molecules that are joined together to give proteins, lipids, carbohydrates and the nucleic acid macromolecules.

All the macromolecules have the carbon atom and the hydrogen atom. These are found across all the macromolecules. The carbohydrates are reducing sugars thus they contain the carbonyl bond. The carbonyl group is absent in lipids, nucleic acids, proteins, and amino hence they do not undergo carbonyl reduction reactions.

Learn more about macromolecules:brainly.com/question/15237842

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3 0
1 year ago
Which organism would not carry out cell respiration
olga nikolaevna [1]

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D. Bear

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The answer is bear because a bear is an animal. Everything but animals can carry out cellular respiration.

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