Which type of mountain is created when rock layers are pushed up by forces inside the Earth?
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When the igneous rock is deep underground for many years, it will form into metamorphic rock under extreme pressure and temperature. It could also form into magma when it melts deep beneath the layers of earth or it could form sediments when subjected to weather erosion.
B. 0 m/s^2
C. -9.81 m/s^2
D. It is not constant.
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Answer: B.
Explanation:
When we talk about projectile motion, we have to deal with parabolic motion, which has two components: vertical and horizontal.
In the case of Earth, the acceleration is due gravity, which is constant and directed downwards (vertically) and have a value of .
Now, in the case of the horizontal component, the acceleration will always be zero.
This is because we are dealing with parabolic movement, the x-component of the velocity remains the same (hence, there is no acceleration), while the y-component always change because it is affected by the acceleration due gravity that acts verticaly.
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The kinetic energy of an object varies directly with the square of the speed of an object. The required kinetic energy of the shot is f 162 J.
What is Kinetic Energy?
The energy possessed by an object by its motion is known as the object's kinetic energy. It depends on the speed and mass of the given object.
Given data -
The mass of shot put is, m = 4 kg.
The speed of shot put is, v = 9 m/s.
The mathematical expression for the kinetic energy of the shot put is,
Solving as.
Thus, we can conclude that the required kinetic energy of the shot is of 162 J.
Learn more about the kinetic energy here:
Answer:
We have: K.E. = mv² / 2
here, m = 4 Kg
v = 9 m/s
Substitute their values into the expression:
K.E. = (4)(9)² / 2
K.E. = (4)(81) / 2
K.E. = 324 / 2
K.E. = 162 Joules
Explanation:
In short answer: it would be K.E.=162 Joules
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or what the passing percentage is for the semester, or any of that.
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The clay must be 300 m/s fast in other to stop the car.
For the car to stop, The momentum of the car must be equal to the momentum of the clay.
Formula:
- MV = mv................. Equation 1
Where:
- M = mass of the car
- V = Velocity of the car
- m = mass of the clay
- v = velocity of the clay
Make v the subject of the equation.
- v = MV/m................... Equation 2
From the question,
Given:
- M = 1500 kg
- V = 2 m/s
- m = 10 kg
Substitute these values into equation 2
- v = 1500(2)/10
- v = 300 m/s.
Hence, The clay must be 300 m/s fast in other to stop the car.
Learn more about momentum here: brainly.com/question/7973509
Final answer:
To stop the car rolling at 2.0 m/s with a blob of clay, you should fire the blob of clay at a speed of 300 m/s. This is based on the principle of conservation of momentum.
Explanation:
The question involves a principle of Physics called the law of conservation of momentum. The law states that the total momentum of a system remains constant if no external forces act on it. Here, the car and the clay are the two objects in the system.
At the start, only the car has momentum, which can be calculated with the equation: momentum = mass x velocity => momentum of car = 1500 kg x 2 m/s = 3000 kg m/s.
After the clay is fired at the car, the total momentum of the system (car + clay) still remains 3000 kg m/s, but now the momentum is shared between them. We want to stop the car, so it will now have no momentum, meaning all momentum must be with the clay.
The equation again turns to momentum = mass x velocity => velocity = momentum/mass => velocity of clay = 3000 kg m/s / 10 kg = 300 m/s.
You should fire the clay at 300 m/s to stop the car.
Learn more about the Law of Conservation of Momentum here:
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