Please answer this question.

Please Answer This Question.

Answers

Answer 1

Answer:

150.15 J

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 5 kg

Height (h) = 3 m

Kinetic energy (KE) =?

Next, we shall determine the velocity of the toy before hitting the ground. This can be obtained as follow:

Initial velocity (u) = 0 m/s

Height (h) = 3 m

Acceleration due to gravity (g) = 9.8 m/s²

Final velocity (v) =?

v² = u² + 2gh

v² = 0² + (2 × 10 × 3)

v² = 0 + 60

v² = 60

Take the square root of both side

v = √60

v = 7.75 m/s

Thus, the velocity of the toy before hitting the ground is 7.75 m/s.

Finally, we shall determine the kinetic energy of the toy before hitting the ground. This can be obtained as follow:

Mass (m) = 5 kg

Velocity (v) = 7.75 m/s.

Kinetic energy (KE) =?

KE = ½mv²

KE = ½ × 5 × 7.75²

KE = 2.5 × 60.06

KE = 150.15 J

Thus, the kinetic energy of the toy before hitting the ground is 150.15 J


Related Questions

Which quantity must be the same for two bodies in thermal equilibrium?
А Total internal energy of the particles in the two bodies are the same.
B Total kinetic energy of the particles in the two bodies are the same.
C Temperature of the two bodies are the same.
D State of matter of the two bodies are the same.​

Answers

C. Temperature of the 2 bodies are the same

an air craft heads north at 320km/hr relative to the wind. The wind velocity is 80km/hr from the north. Find the velocity of the air craft relative to the ground​

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Answer:

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you do no know an objects velocity until you know its _____.

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I agree with the answer above, but since velocity is a vector, I think displacement would be a better answer :)

A cinder block is sitting on a platform 10 m high. It has a mass of 25 Kg. What is the potential energy

Answers

Answer:

2450J

Explanation:

PE = mgh

PE = (25)(9.8)(10)

After reading a book, Julio looks out of the window and sees clouds in the distance. Which change allows Julio to clearly see the clouds after looking at his book? His corneas become flatter. His lenses change shape. His optic nerves begin sending signals. His vitreous humor becomes denser.

Answers

Answer:

Lens change

Explanation:

by changing the shape of the lens the rays from the clouds will be able to refract correctly in the lens then create the correct upside-down image on the retina.

Hope it helped

PLS mark BRAINLIEST

Answer:

His lenses change shape.

Explanation:

just took the quiz

Which equation determines the acceleration of an object moving in a straight line?

You must calculate the change in speed per unit of time.

Group of answer choices

Acceleration = ( initial speed - final speed ) / time

Acceleration = time / ( initial speed - final speed)

Acceleration = time / ( final speed - initial speed)

Acceleration = ( final speed - initial speed ) / time

Answers

Answer:

Option D

Last option

GOOD LUCK FOR THE FUTURE! :)

What is momentum? And it’s types?

Answers

Answer:

Momentum is the product of mass and velocity. The two types of momentum are angular and linear.

Explanation:

Answer:

Explanation: (Momentum is mass * velocity. Its units, in the SI system are kilogram meter per second) What is Inertia?

In physics, momentum is the product of mass and velocity. The greater the product of this equation, the greater the momentum. In science, there are two types of momentum: angular and linear, which concern different types of moving objects. However, that is not where the definition stops. The word momentum is also used as part of everyday speech, and is one of the very few physics concept whose metaphorical definition is the same as its actual one.

I HOPE THIS ANSWER WILL HELP YOU!!!

I NEED HELP
The average kinetic energy of the particles of two pieces of iron at the same temperature and mass would be __________.

Question 1 options:

Different


The same


Not equivilent


With in 500 degrees of eachother

Answers

Answer:

the answer is different

Explanation:

i took the test

Do you think we might have problems with not enough water to supply our needs (water scarcity) in the
ture? Why or why not? If you answered yes, what might the causes be?

Answers

Answer:

Water scarcity (water stress or water crisis) is the lack of fresh water resources to meet the standard water demand. Humanity is facing a water crisis, due to unequal distribution (exacerbated by climate change) resulting in some very wet and some very dry geographic locations, plus a sharp rise in global freshwater demand in recent decades driven by industry. Water scarcity can also be caused by droughts, lack of rainfall, or pollution. This was listed in 2019 by the World Economic Forum as one of the largest global risks in terms of potential impact over the next decade.[1] It is manifested by partial or no satisfaction of expressed demand, economic competition for water quantity or quality, disputes between users, irreversible depletion of groundwater, and negative impacts on the environment.[2] Two-thirds of the global population (4 billion people) live under conditions of severe water scarcity at least 1 month of the year.[3][4][5][6] Half a billion people in the world face severe water scarcity all year round.[3] Half of the world's largest cities experience water scarcity.[5]

PLEASE READ CAREFULLY. AND PLEASE MARK AS BRAINLIEST

What does each system help you do?
1 Somatic Nervous System
2 Autonomic Nervous System
3 Sympathetic Division
4 Parasympathetic Division
5 Hormones

Answers

Explanation:

1.The somatic nervous system is the part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles. 

2. The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, digestion, respiratory rate, pupillary response, urination, ect...

3. Sympathetic Division is a term used by researchers and medical practitioners to describe the subdivision of the autonomic nervous system (that controls involuntary and automatic physical reactions) that responds to emergency situations by mobilizing and controlling the energy necessary to cope with the situation.

4. The part of the autonomic nervous system that tends to act in opposition to the sympathetic nervous system, as by slowing down the heart and dilating the blood vessels. It also regulates the function of many glands, such as those that produce tears and saliva.

5. a regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action.

What color rays have the smaller/lesser angle

Answers

Answer:

Blue?

Explanation:

Gizmo uniform circular motion

Answers

ok that looks boring

Please help ill give out brainliest?!!!

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Air resistance because heavy object don’t get affect by air resistance than light object so
Because acceleration is inversely proportional to mass.

NEED HELP ASAPTsunamis are often called tidal waves because they are caused by tides.

o True

o False

Answers

Answer:

false

Explanation:

a tsunami is almost always caused by an earthquake under water.

what ways might a superhero utilize magnetic forces to move, levitate or travel from place to place?

Answers

Answer:

He could use magnets to lift heavy things and also move things like a train

Explanation:

i had the same question

What is the potential energy at Z

Answers

Answer:

It would be 2,500

Explanation:

The KE is 7,500 so the PE would be 2,500


What is the speed of a 180 g ball if its kinetic energy is 100 J?

Answers

Answer:

Velocity, V = 33.33 m/s

Explanation:

Given the following data;

Mass = 180grams to kilograms = 180/1000 = 0.18 kg

Kinetic energy = 100J

To find the speed;

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

[tex] K.E = \frac{1}{2}MV^{2}[/tex]

Where;

K.E represents kinetic energy measured in Joules.

M represents mass measured in kilograms.

V represents velocity measured in metres per seconds square.

Substituting into the equation, we have;

100 = ½*0.18*V²

Cross-multiplying, we have;

200 = 0.18*V²

V² = 200/0.18

V² = 1111.11

Taking the square root of both sides, we have;

Velocity, V = 33.33 m/s

How are ultraviolet waves used for communication​

Answers

Can you include a picture

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Hahaha +Hajiya ooiOqo0191

Which is not a measurement of effort for exercises or activity?

repetitions


time
distance

elevation

Answers

I thinks it repetitions.

Please help and thank you

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Answer:

B. C3H8

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Does distance play a role in the magnetic field ?

Answers

Magnetic force obeys an inverse square law with distance. ... If the distance between two magnets is halved the magnetic force between them will increase to four times the initial value.

PLEASE HELP ASAP!!!!!

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Answer:

MOSE

Explanation:

a trolley of mass 20kg was originally at rest on a smoth horizontal surface. bu how much will it accelerate if a pulling force of 22N is applied on it horizontally?​

Answers

Answer:

just divide 22 N by 20 kg to get the acceleration in m/s2

Explanation:

I hope this is right-

Which methods reduce friction?

increasing speed
lubricating surfaces
using sticky materials
increasing surface roughness

Answers

The answer is Lubricating surfaces

Answer:

The answer would be B. Lubricating surfaces.

Explanation:

Mark brainliest pls

A certain element has a half-life of 200 years. How much of a 1600 gram sample would be left after 800 years?

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2222222×7÷4÷5+6(8×9)

Explain how you can locate the Pole Star with the help of Ursa Major?​

Answers

Answer: Pole star can be located using Ursa Major by extending an imaginary line from the last two stars towards the North direction.

Explanation:

Answer:

The pole star can be located using the Ursa Major constellation, by imagining a line towards the Northern direction connecting two stars present at the end of the bowl, This imaginary line meets Pole Star. The length of the imaginary line from the bowl is about five times the distance between the two stars of the bowl.

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NASA’s space shuttle program was active from 1981 until 2011. The photograph shows rockets carrying a space shuttle off the launchpad.


How can Newton’s law of action–reaction best be applied to explain the movement of a rocket?

Answers

Answer:As the fuel burns,gases push against the rocket, moving it upward

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Burning fuel in a rocket causes a push that propels the rocket forward from the front. The exhaust gas is pushed rearward in an equal and opposite direction as a result.

What is Newton’s law?

The three fundamental laws of classical mechanics known as Newton's laws of motion describe how an object's motion and the forces acting on it interact.

The following is a paraphrasing of these laws: Unless a force acts upon a body, it remains at rest or in continual straight-line motion.

The creation of thrust by a rocket engine can be understood via Newton's third law. In a rocket engine, a fuel and an oxidizer are burned to produce hot exhaust gas.

The hot exhaust gas from the rocket accelerates to the back of the rocket after passing through the nozzle.

Thus, this way, Newton’s law of action–reaction best be applied to rocket movement.

For more details regarding Newton's law, visit:

https://brainly.com/question/15280051

#SPJ2

An object is moving to the right at a constant velocity. What will happen if a
force of 20 N starts acting on it in the opposite direction?
А
The object's velocity will increase.
B
The object's velocity will decrease.
с
The object will come to a stop.
D
The object will move at the same velocity.

Answers

Answer:

A

Explanation:

just trust me

What type of Circuit do they use in a home? WHY ? (Simple circuit / Parallel circuit / Series circuit) helpp

Answers

Answer:

Parallel

Explanation:

Most standard 120-volt household circuits in your home are (or should be) parallel circuits. Outlets, switches, and light fixtures are wired in such a way that the hot and neutral wires maintain a continuous circuit pathway independent from the individual devices that draw their power from the circuit.

Hope that helps :)

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