Answers
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
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Please help and thank you
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Answer:
B. C3H8
Chemical Formula for propane is C3H8
What is the potential energy at Z
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Answer:
It would be 2,500
Explanation:
The KE is 7,500 so the PE would be 2,500
Does distance play a role in the magnetic field ?
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How are ultraviolet waves used for communication
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A cinder block is sitting on a platform 10 m high. It has a mass of 25 Kg. What is the potential energy
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Answer:
2450J
Explanation:
PE = mgh
PE = (25)(9.8)(10)
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!!!
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
Explanation: here’s a tip download socratic take a pic of the question then scroll down there should be a quizzes with the answer for you quizzes is good when you want answers to a Science or language arts/reading so yea
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
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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
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.
Explanation:
PLEASE HELP ASAP!!!!!
Answers
Answer:
MOSE
Explanation:
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
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
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
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-
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 :)
Which is not a measurement of effort for exercises or activity?
repetitions
time
distance
elevation
Answers
Please help ill give out brainliest?!!!
Answers
Gizmo uniform circular motion
Answers
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.
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 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
you do no know an objects velocity until you know its _____.
Answers
Which methods reduce friction?
increasing speed
lubricating surfaces
using sticky materials
increasing surface roughness
Answers
Answer:
The answer would be B. Lubricating surfaces.
Explanation:
Mark brainliest pls
Given an objects mass and observing its acceleration what can be found in a direct application of Newton’s second law of motion?
Answers
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.
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What color rays have the smaller/lesser angle
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Answer:
Blue?
Explanation:
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.
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:
iyuksouijz
Explanation:
ok,kcipxuoa
A certain element has a half-life of 200 years. How much of a 1600 gram sample would be left after 800 years?
Answers
2222222×7÷4÷5+6(8×9)
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
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