A ball is dropped from height of 45 m. A second ball is thrown downwards from the same
with an initial vity both the balls reach the ground at the same time, culate the value of u​

Answers

Answer 1

Answer:

h = 45 m

g(acceleration due to gravity) = 9.8 m/s^2 or 10 m/s^2

Final velocity ( v ) = 0 m/s

v = ?

we know theirs equation of motion, v^2 = u^2 + 2gh

0 = u^2 + 2(-10)(45) [ The acceleration due to gravity is ALWAYS negative. Any object affected only by gravity (a projectile or an object in free fall) has an acceleration of -9.81 m/s2, regardless of the direction. The acceleration is negative when going up because the speed is decreasing.]

0 = u^2- 900

900 = u^2

u = √900 = 30 m/s


Related Questions


Use the drop-down menus to identify the career that matches each description.
Checks and documents the amount of a resource used by a household or facility:
Analyzes employers to make sure they do not discriminate unfairly:
Oversees the workers involved in analyzing a cause of death

Answers

Answer:

Checks and documents the amount of a resource used by a household or facility:

✔ Utilities Meter Reader

Analyzes employers to make sure they do not discriminate unfairly:

✔ Equal Opportunity Representative

Oversees the workers involved in analyzing a cause of death:

✔ Coroner

Explanation:

Edge2020

Checks and documents the amount of a resource used by a household or facility: Utilities Meter Reader, Analyzes employers to make sure they do not discriminate unfairly like  Equal Opportunity Representative

Oversees the workers involved in analyzing a cause of death Coroner

what is document ?

A document can be defined as a form of useful information, it can be in digital and nondigital forms.

A document can be either digital or nondigital. Different methods are used to store digital and nondigital documents.

A paper document can be physically stored in a file cabinet, whereas an electronic document is stored in a computer as one or more files.

Digital documents can also be part of a database whereas Electronic document management programs deal with the management, storage and security of electronic documents

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How many ATP molecules can the cell produce from a single molecule of glucose through the complete process of cellular respiration? O A. 2 ATP O B. 36 ATP O C. 16 ATN O D. 48 ATP​

Answers

Answer:

I would say the answer is:

B. 36 ATP :)

How much of the world's oxygen is produced in the Amazon rainforest?

Answers

Answer:

About 76% of the oxygen

According to the law of conservation of matter, we know that the total number of atoms does not change in a chemical reaction and
thus mass is conserved. The reactant in this model is hydrogen peroxide Hydrogen peroxide decomposes to produce water and
oxygen gas. How many water molecules must be added to complete this model?
es)

Answers

Explanation:

H202 = H20 + O2

by balancing the this skeletal equation : he get

2H202 ( hydrogen peroxide) = 2H20( water) + O2 (oxygen)

so 1 more water molecules is needed to complete this model ..

A nurse made a tragic mistake and hooked a sick patient up to an IV line that included pure water. The contents of the IV bag were then injected into the patient. The patient is now getting sicker. What could be happening?

Answers

Answer:

The water is hypotonic to the body of the patients

Explanation:

Pure water is generally hypotonic to the red blood cells in the body of humans. Hence, if a person is hooked up to an IV line that included pure water, the red blood cells in the person's body will take-in water, become turgid, and then start lysing. This will make the person become sick or even cause death in severe cases.

which of the following would not be considered a nontraditional sport

Answers

Answer:

theres no options..?

Explanation:

. . . . . . .

What do ribosomes produce following
instructions from the nucleus?
A. energy
B. proteins
C. DNA

Answers

Answer:  Here's what I could find:

Ribosomes get their orders for protein synthesis from the nucleus, where portions of DNA (genes) are transcribed to make messenger RNAs. An mRNA travels to the ribosome and uses information it contains to build a proteins with specific amino acid sequences.

Explanation: I'm pretty sure it's protein, if not then it's DNA.

After playing in an old shed, two boys tell their mother that they hurt all over. She checks and finds that they both have fevers. One says that he is dizzy and his head hurts, while the other says he thinks he might vomit. Wondering what the boys have gotten into, their mother seeks medical help. After running tests, the doctor informs her that the boys have managed to pick up a hantavirus. It is a very serious strain, Sin Nombre, and they must get treatment straight away. Considering the boys' situation, where do they MOST likely live?

Answers

Answer:

Considering the boys' situation, the boys live in the rural areas of one of the western United States, e.g. California.

Explanation:

Hantavirus is spread by rodents and is most common in rural areas of the western United States during the spring and summer months.  Hantavirus pulmonary syndrome also occurs in South America (especially in Argentina, Chile, Uruguay, Paraguay, Brazil, and Bolivia).  Hantavirus cases have also occurred in Canada and some parts of Asia, where they reportedly caused kidney disorders rather than lung problems.

Carnivorous plants have enzymes that are able to break down the proteins of the insects and small animals that they ingest. The mechanisms required for carnivorous plants have developed over many lineages across the world in separate ecosystems. The development of carnivorous mechanisms in plants is an example of:

Answers

Answer:

Convergent Evolution

Explanation:

Convergent evolution is the development of similar traits, across many lineages by plants and animals who originally do not have these traits but developed them because of the biome that they find themselves. Carnivorous plants are examples of living things that have undergone carnivorous evolution.

Plants lacking in Nitrogen have undergone carnivorous evolution for up to seven lineages. Sundews for instance have developed flypaper traps, a carnivorous property that helps them trap insects that they eventually digest.

Which statement describes a reason that radioactive decay is hazardous?

Answers

Answer:

C

Explanation:

Radiation can either kill cells or damage the DNA within them, which damages their ability to reproduce and can eventually lead to cancer. When radiation is present, high energy particles pass through your body. These can collide with atoms in your body and disrupt atomic structure.

Answer: c

Explanation:


Select the correct answer.
Which technique would most probably involve using a magna brush to detect a latent print?
A.
carbon powder dusting
B.
ninhydrin exposure
C.
iron powder dusting
D.
silver nitrate exposure
E.
superglue fuming

Answers

i think the answer is c !!


The technique that would most probably involve using a Magna brush to detect a latent print is known as Iron powder dusting. Thus, the correct option for this question is C.

What is Latent print?

Latent print may be defined as an impression of the friction skin of the fingers or palms of the hands that have been transferred to another surface. The permanent and unique arrangement of the features of this skin allows for the identification of an individual as a latent print.

Iron powder is commonly placed into brake pads, drum brake lining, and other applications in order to construct the necessary amount of friction. Iron powder dusting is a type of technique that is utilized as a filler that can help increase the performance and durability of these products by dissipating the generated heat.

Therefore, iron powder dusting is a type of technique that would most probably involve using a Magna brush to detect a latent print. Thus, the correct option for this question is C.

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Because of base pairing in DNA, the percentage of​

Answers

Answer:

Since certain bases always appear in pairs, they will have equal percentages of the DNA composition. The percentage of adenine will equal the percentage of thymine, and the percentage of cytosine will equal the percentage of guanine. Together, these percentages will add to 100%.

Explanation:

The percentage of Adenine is always equal to the Thymine because of base pairing.

Complementary Rule:

It say that the percentage of Adenine is always equal to the Thymine and percentage of Cytosine is always equal to the percentage of Guanine.

Thus the total percentage of Purine and pyrimidine is 100%.

Therefore, the percentage of Adenine is always equal to the Thymine because of base pairing.

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Okay ill give you a brainy thing if you answer correctly please don't guess this is a big part of my grade God bless​

Answers

I would say false because there can be so many different organisms in an ecosystem. A chicken can eat grasshoppers and ants but the both of them may not be recorded in the web. Let me know if im correct please.

What organelles can be found in a prokaryotic cell? Pls answer ASP.

Answers

Answer:

Cell Wall

Cell Membrane

Cytoplasm

Ribosomes

Help!!
Select the correct location on the diagram,
The Sun is the main source of energy for all the subsystems of Earth. Identify the subsystem that can store the most energy from the Sun due
to its high heat capacity.

Answers

Answer:

Water

Explanation:

Just took post test for edmentum

Nearly all climatic and biological activities on Earth depend on solar energy, which is the primary energy driving our climate system. Numerous Earthly processes, such as surface warming, evaporation, photosynthesis, and air circulation, depend on energy from the sun.

What are the Sun is affected by its high heat capacity?

The sun heats the earth's surface, and as the air above it warms as well, wind is produced. Water evaporated by the sun produces clouds and rain, which in turn give us moving rivers and streams.

As a result of the heat being introduced to the system doing some pressure-volume work at constant pressure, the heat capacity at constant pressure is higher than the heat capacity at constant volume.

In a system with heat capacity at constant volume, the entire heat input is used to increase the temperature.

Therefore, Energy comes from both the wind and moving water (hydropower). So you can see, the sun is the source of a variety of natural energies.

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gametes, egg and sperm each carry alleles for a given trait.How many alleles do they carry for a given trait?

A. 3
B. 2
C .1

Answers

Answer:

b. 2

Explanation:

Gene's come in different varieties called alleles

You have learned that each one of your cells contains one copy of your unique genome. Given the fact that all the cells in one human contain the same DNA, how is it possible that our cell types are so different, resulting in four different tissue types?

Answers

Answer:

See the answer below

Explanation:

Yes, the cells in one human contain the same DNA. However, during gene expression, not all the genes are expressed for every cell. Only a specific region of the DNA is expressed in cells and the cells in which the same DNA region is expressed end up performing similar roles in the body of organisms. The portion of the DNA that is expressed dictates the function which these cells will serve. This is called the differentiation of cells.

Cell specialization and tissue differentiation are due to the fact that although somatic cells have the same DNA, they express different genes and therefore generate different cells/tissues.

The human body contains approximately 200 cell types, which can be classified into four types of tissues: epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

All these tissues and cell types are derived from three embryo layers, i.e., ectoderm, mesoderm, and endoderm.

The process of differential gene expression from these three embryo layers leads to the development of different types of cells/tissues in different regions of the developing embryo.

For example, the expression of the connective tissue growth factor (CTGF) gene has been associated with the generation of connective tissue during embryo development.

In conclusion, cell specialization and tissue differentiation are due to the fact that although somatic cells have the same DNA, they express different genes and therefore generate different cells/tissues.

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Please help me answer the question on the picture ..

Answers

Answer:

C.

Explanation:

Because of the A on top, both boxes in the first colnum should read Aa.

Please help, I will mark you as Brainiest!

Answers

This cell is in telophase since the chromosomes have reached the poles of the mother cell.

If it was metaphase there would be an ecuatorial plate which is not present.

suggest a reason for the great variability seen in the structure of pollen grains

Answers

Hey~

Its affected by the different flower/plant types.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Helppp! I don’t know what to put for genotype or phenotype because it’s not asking anything specific

Answers

jvffd

Explanation:

dsmhvf

Which of these represents the DNA segment from which this section of mRNA was transcribed?
mRNA Section
MOA MMO
A) GAAUCU
B) TCUTTG
C) ACTAAG
D) UCCTGA

Answers

Answer:

The answer is c

Explanation:

The reason it is c is because when you transcribe the oppisites in the image that is what you get ACTAAG

pls give brainliest

ACTAAG represents the DNA segment from which this section of mRNA was transcribed.

What is mRNA?

Single-stranded RNAs of the type known as messenger RNA, or mRNA, are used to make proteins. mRNA is created during transcription from a DNA template.

The function of mRNA is to transport protein information from DNA in a cell's nucleus to the cytoplasm, or watery interior, where the machinery responsible for making proteins reads the mRNA sequence and converts each three-base codon into an amino acid that belongs in a protein chain that is expanding.

 Therefore, mRNA is actually a type of nucleic acid that aids in the cellular machinery's ability to read the human genome, which is encoded in DNA.

Therefore, ACTAAG represents the DNA segment from which this section of mRNA was transcribed.

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Please help me, this is grade 8 science

Answers

1. Chlorophyll
2.canine
3.Primary teeth
4.not sure (never learned this)
5. Because they make their food which is what helps them grown and reproduce and ofc also survive
6.Animals need energy to survive and they get their energy from food. plant-eating animals use plants to produce and power their bodies

what are five relationships between animals

Answers

Answer:I will be pilot anyways I know one there is a commensalism between a dolphin and the birds where the birds push the fish to the top of the water column and then the birds push the fish down to the dolphins I will be pilot

Explanation:

Adhesives used to bond the plies together classifies plywood as either

Answers

Answer:

what is the question I will help you I'm comments

Cellular respiration use sugar and _______ to make ATP,_________ and ______

Help

Answers

Oxygen, water and carbon dioxide

A chimpanzee has 48 chromosomes. When performing meiosis, one chromosome does not split properly in Anaphase II, causing one cell to have an extra copy of that chromosome. Knowing what you know, how many chromosomes should the MUTATED chimpanzee egg cell have? 48 49 24 25

Answers

Answer:

The mutated cell will have 25 chromosomes.

Explanation:

Meiosis is a cell division process in sexual reproduction which involves two successive divisions of a cell having a diploid (2n) number of chromosomes into four daughter cells having a haploid (1n) number of chromosomes.

Meiosis consists of two successive nuclear divisions, meiosis I and meiosis II. Each division consists of these stages: prophase, metaphase, anaphase, and telophase.

Anaphase consists of anaphase I and II. During anaphase II, the centromeres linking the two pairs of chromosomes which are called chromatids separate, and the sister chromatids move toward the opposite poles of the cell and are now called chromosomes.

Therefore in the chimpanzee having 48 chromosomes, after underoing meiosis, each daughter cell will have 24 chromosomes. If there is a case of non-separation of one chromosome, the cell will have 1n + 1 chromosomes i.e. 24 + 1 = 25 chromosomes.

Which of the following are matched correctly? (choose all that
apply)
short bone- carpals
long bone- femur
Irregular bone- Vertebrae
Flat bone- cranium
Irregular bone- sternum

Answers

The correct answers are

Short bone-carpals

Long bone-femur

Irregular-vertebrae

Flat bone-cranium


what are extinct animals ? ​

Answers

Definition or examples?

If mice from the F1 generation are crossed, their offspring are the

Answers

Answer:

F2 generation

Explanation:

If mice from the F1 generation are crossed, their offspring are the F2 generation.

What are the characteristics of F2 generation?

F2 second filial generation is the generation of individuals which arises as a result of inbreeding of interbreeding amongst individuals of F1 generation.

A second filial generation or F2 generation is a group of people born as a result of inbreeding and interbreeding among members of the same family. The generation of hybrids formed from a cross between genetically diverse people is known as the first filial generation.

First-generation (F1) progeny only showed the dominant traits, but recessive traits reappeared in the self-pollinated second-generation (F2) plants in a 3:1 ratio of dominant to recessive traits.

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