A rock falls off the edge of a building and falls for 10 seconds. What was
the rock's final velocity?

Answers

Answer 1
assuming the rock falls straight down, we can determine that this rock is under the influence of solely gravity (the rock is in free fall). therefore, the rock will accelerate at 9.8 m/s^2 (acceleration due to gravity). we can utilize this to solve for vf by plugging our known variables into the kinematics equation vf=v0+at. this will lead us to vf=0+9.8(10), or vf=98 m/s^2. this answer, while correct, seems a tad bit unreasonable, so you should mention to your teacher to consider the feasibility of his physics problems.

Related Questions

Will mark brainiest!!!

1. A __ is caused by a sudden shift in the ocean crust which displaces the water. *

2. A tsunamis is possible, but unlikely at a __ plate boundary where two plates are moving sideways past each other. *

3. A Shallow __ is a good indicator of tsunamis, but sends data very slowly and cannot detect earthquakes. *

4. Tsunamis are common at __ plate boundaries, since large earthquakes release the built up pressure, resulting in a quick vertical movement of the plate. *

5. The Indonesian Earthquake of 2004 had a 9.1__, which was the third largest ever recorded in human history. *

All possible answers:
A. Earthquake
B. Tsunami
C. Magnitude
D. Sensor
E. Transform
F. Convergent
G. Divergent

Answers

Answer:

1. Tsunami

2.Divergent

3.Sensor

4.Convergent

5.Magnitude

Explanation:

PLEASE HELP ME IM TIMED

Answers

Yeah it’s the mantle

In its American colonies, Spain helped the Catholic Church meet its goal of
finding gold.
gaining territory.
converting people.
achieving glory.
This is from ed please help thank you

Answers

Answer: Converting people

Explanation: In Spanish colonies such as Florida, Spanish moved up into the other states to spread their christianity and were successful with doing so.

Converting people but I’m not sure

Select the correct answer.
Which two factors does the power of a machine depend on?
Α. work and distance
B. force and distance
C. work and time
D. time and distance

Answers

Answer: C. work and time

Explanation: hope this helps

PLEASE HELP ME! IM TIMED

Answers

Answer:

Toothpaste

Because it is viscous

What are the different isotopes of carbon and which isotopes are relevant for carbon dating?

Answers

Ans: Radiocarbon dating uses carbon isotopes.

Radiocarbon dating relies on the carbon isotopes carbon-14 and carbon-12. Scientists are looking for the ratio of those two isotopes in a sample. Most carbon on Earth exists as the very stable isotope carbon-12, with a very small amount as carbon-13.

The three isotopes of carbon are C-12, C-13, and C-14. The carbon isotope 14C, which is the most commonly used radioactive cosmogenic isotope, can be used to date occurrences that took place within the last 60,000 years or so.

There are three types of carbon isotopes. Carbon-12 (12C) is by far the most prevalent isotope of carbon and it has six neutrons in relation to its six protons. Carbon-13 (13C), the second-heaviest carbon isotope, has seven neutrons. Since neither 12C nor 13C undergoes radioactive decay over time, they are both referred to as stable isotopes. The nucleus of the rare carbon-14 (14C) isotope has eight neutrons. This isotope, in contrast to 12C and 13C, is unstable or radioactive. A 14C atom will eventually transform into a stable byproduct.

The process of radiocarbon dating, also known as carbon dating or carbon-14 dating, uses the characteristics of radiocarbon (14C), a radioactive isotope of carbon, to estimate the age of an object made of organic material.

Learn more about carbon:

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When you push a box with 20 N of force, what force does the box apply back on you?

Answers

Remember Newton’s third law: for every force, there is an equal and opposite reaction.

The force being applied back is also 20N

Which is not a family of the periodic table?
O alkaline-earth metals
O anions
O halogens
O noble gases

Answers

Answer:

anions

Explanation:

The other are families of the periodic table.

An anion is a negatively charged ion.

Answer

Anion The electronic configuration of many ions is that of the closest noble gas to them in the periodic table.

Explanation

Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table.

Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa)

Halogens The halogens, members of Group 17 of the periodic table, include the elements

Mark me as brainleist pls

Can someone help me in this please any one good in science.

Answers

Let's calculate the equivalent resistances on both circuits.

On Diagram A we have a series connection of the resistors. The equivalent resistance will be the sum of all resistances:

[tex]R_{eq}=1+1+1\\\\\boxed{R_{eq}=3\Omega}[/tex]

On diagram B we have a parallel connection of the resistors. The reciprocal of the equivalent resistance will be the sum of the reciprocals of all the resistances:

[tex]\frac{1}{R_{eq}} = \frac{1}{1} +\frac{1}{1} +\frac{1}{1} \\\frac{1}{R_{eq}}=3\\\\\boxed{R_{eq}=\frac{1}{3}}[/tex]

Therefore, the larger resistance occurs on diagram A.

For the current, recall

[tex]V=IR[/tex]

Where [tex]I[/tex] stands for current [tex]R[/tex] is the resistance and [tex]V[/tex] is the voltage. Rearranging the equation we have

[tex]I = \frac{V}{R}[/tex]

We can see that the larger the resistance, the smaller the current gets. So the larger current must happen in the diagram with smaller resistance. Therefore, the larger current occurs on diagram B.

Glad to help, wish you great studies ;)

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A chemical bond resulting from the exchange of electrons between two atoms is a(n) ________________ bond.

a
covalent
b
ionic
c
Lewis
d
metallic

Answers

Answer:

a covalent

Explanation:

ionic bonding involves only the transfer of electrons but not exchange of electrons

A 50 Kg football player is standing still when he experiences an inelastic collision with a 150 Kg football player who is traveling at 10 m/s. What is the velocity of the player immediately after the collision?

Answers

Answer:

V = 7.5 m/s

Explanation:

Given that,

Mass of player 1, m₁ = 50 kg

Mass of player 2, m₂ = 150 kg

50 kg player stands still and 150 kg player is traveling at 10 m/s

We need to find the velocity of the player immediately after the collision. As the inelastic collision occurs. The linear momentum will remain conserved. After the collision, let they move with a constant velocity say V.So,

[tex]m_1u_1+m_2u_2=(m_1+m_2)V\\\\V=\dfrac{m_1u_1+m_2u_2}{(m_1+m_2)}\\\\=\dfrac{150\times 10}{(50+150)}\\\\=7.5\ m/s[/tex]

So, the velocity of the player immediately after the collision is 7.5 m/s.

Which TWO of the following examples are a chemical reaction?
A melting ice
B breaking glass
C crumpling paper
D rusting iron
E burning wood

Answers

Answer:

D and E

Explanation:

They both produce a new object or substance afterwards.

Answer:

D. and E.

Explanation:

Hope this helps and I hope u have an Amazing day!!

HELP ASAP FAST PLEASE I NEED HELP
Mechanical energy is defined as


Question 1 options:


the energy of motion and position, which is represented by the formula KE + PE = ME



potential energy



Energy of motion



Energy of machines and tools

Answers

Answer:

energy of motion is represented by formula KE+PE=ME

Answer:

formula:

KE+PE=ME

Explanation:

HOPE IT HELPS!

thank me later

PLEASE HELP ME IM TIMED

Answers

At a boundary where plates slide past each other

(please awnser i need my grade up) We can calculate the about of potential energy in an object using the formula PE = mgh where m is the mass of the object, g is the acceleration due to gravity (which on Earth is a constant 9.8) and h is the height the object is from ground. If I have a 2kg bar of gold and raise that to a shelf mounted 3 meters from the ground what is that objects GPE? Remember to insert the numbers into the formula like this PE = (2) (9.8) (3) , you may use your calculator to complete this multiplication problem.

Answers

Answer:

88.2 J

Explanation: Hope I helped <3

Select three effective methods for helping a friend who is showing self harming behavior

Answers

Answer:

Avoid judging or criticizing your friend.

Let your friend know that you care and want to help

Share the ways you cope with stress and other problems in your life

I had this question

Which equation below is correctly balanced?
A 2Na + O2 ---> 2Na2O
B Sn + 2KOH ---> K2SnO2 + 2H2
C AsCl3 + 3H2O ---> 3HCl + As(OH)3
D H2 + O2 ---> H2O

Answers

Answer:

D H2 + O2 ---> H2O

Explanation:

Answer:

I am not sure what the answer is but keep reading.

Explanation:

The answer is not D or A for sure

A person runs 3km north. One hour later, she runs 3km south, which of the following statements describes the persons complete trip

Answers

The person's complete trip was a 6km round trip because they traveled 3km north and then 3km south, returning to their original location.

What is trip?

A trip is a journey or excursion to some destination, usually for a specific purpose. It can be as short as a day trip or as long as a round-the-world adventure. A trip typically involves travel by foot, car, railroad, boat, or airplane and often involves multiple destinations. It may also involve activities such as camping, hiking, sightseeing, and other leisure activities. Travelers usually plan trips in advance to ensure they have enough time to see and do the things they want to. Trips can also be spontaneous, with travelers deciding on the fly where to go and what to do.

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What is meant by the components of a vector

Answers

when you break a vector into its parts, those parts are called its components. For example, in the vector (4, 1), the x-axis (horizontal) component is 4, and the y-axis (vertical) component is 1.

The density of an object is dependent upon the object’s mass and ---

Answers

Answer:Volume

Explanation:

Density = mass/ Volume

Answer:

Volume

Explanation:

Which source of energy causes most of the water evaporation on Earth’s surface?
A.
wind
B.
solar
C.
gravity
D.
electrical

Answers

Answer:

I think it will be b. solar

Hope I can help.

Answer:

Explanation:

its b

Exercise 25
1. Ablock of wood is 10 cm long, by 4 cm broad
by 15 cm thick. The block weighs 31 g.
Find the density of the wood in kg/m!​

Answers

Explanation:

d=m/v. volume in cm^3 is 10x4x15=600cm^3. 31g/600cm^3 converts to .031kg/.0006m^3.

what is meant by absolute zero temperature?​

Answers

Answer:

Absolute zero, temperature at which a thermodynamic system has the lowest energy. It corresponds to −273.15 °C on the Celsius temperature scale and to −459.67 °F on the Fahrenheit temperature scale.

Absolute zero isn't even zero on the temperature scales used by nonscientists. It's minus 273.15 degrees on the Celsius scale, or minus 459.67 degrees Fahrenheit

What does a curved gradient line in a distance-time graph represent?

Answers

Answer:

If the line is curved, the slope is changing, which also means the velocity is changing. In a distance-time graph, the gradient of the line is equal to the speed of the object. The more the gradient (and the steeper the line) the faster the object is moving.

When velocity is graphed with respect to time, what does the area under
the line represent?

A) velocity

B) distance

C) acceleration

D) displacement


Answers

Answer:

the answer is D

Explanation:

Since the velocity of the object is the derivative of the position graph, the area under the line in the velocity vs. time graph is the displacement of the object.

The Answer

Is Displacement

Mars orbits the Sun once
every 687 days in a circle
of radius 2.28 x 10^10 m.
What is Mars' velocity?
(Unit = m/s)

Answers

Answer:

2413

Explanation:

If your on Acellus 2413 is what you want to put in

A car traveling at 50 m/s comes to a stop in 5 seconds. What is the
acceleration of this?

Answers

Answer:

10

Explanation:

10 is the answer because you divide 50  and 5 and your answer is 10.

Hope this helps:)

Pls mark brainlist

Answer:

a = -10m/s²

Explanation:

Givens:

Vf = 0m/s

Vi = 50m/s

t = 5s

Use the following kinematic equation:

Vf = Vi+at

Rearrange

a = (Vf-Vi)/t

a = -10m/s²

True or False? There is more downward force on a faster car than on a slower car when both
are traveling at the same time and on the same
highway.

Answers

Answer:

false

Explanation:

bc the faster car has more inertia (i dont think im correct)

not sure but feels like it

Which type of energies make up the mechanical energy of a roller coaster moving along a track?

Answers

Answer:

gravitational potential energy and kinetic energy

Explanation:

What makes the yardstick test a direct measurement of reaction time?
A.
The further the yardstick falls, the slower the reaction time.
B.
Yardsticks have numerical markings for length.
C.
Yardsticks are designed to measure reaction time.
D.
all of the above


Please select the best answer from the choices provided.

A
B
C
D

Answers

Answer:

A. the further the yardsticks falls, the slower the reaction time.

Answer:

The further the yardstick falls, the slower the reaction time.

Explanation:

its A

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