Answer:
1) The final displacement of cyclist is 20.8 km.
2) The average velocity of cyclist is 18.35 m/h
Explanation:
The path traced by the cyclist is as shown in the attached figure
from the attached figure we can see
1) Initial distance covered = 8.0 km east therefore OA = 8.0 km
2) When the cyclist turns and travels 3.2 km west thus AB = 3.2 km
3) From B the cyclist turns and travels 16 km east thus BC = 16.0 km
As we can see that the total displacement is OC = OA- AB + BC = 8.0-3.2+16 = 20.8 km
Thus the final displacement is 20.8 km.
Part b)
By definition of average velocity we have
Answer: Both masses are 0.285 m apart
Explanation:
According to the law of Universal Gravitation:
Where:
is the gravitational force between the masses
is the gravitational constant
is the mass of the first object
is the mass of the second object
is the distance between the objects
Isolating :
This is the distance between both objects
<h2>Hello!</h2>
The answer is: The acceleration of the object B is half of the object A.
<h2>Why?</h2>
We can solve this problem applying the Newton's Second Law, which states that the product of the mass and the acceleration of a body is equal to the force applied to that body.
So,
For the object A, we have:
Calculating the acceleration we have:
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For the object B, we have:
Calculating the acceleration we have:
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Hence,
So, what is true about the acceleration of object A and object B?
The answer is that the acceleration of the object B is half of the object A acceleration since the mass of the object B is two times the mass of the object A.
Have a nice day!
Answer:
SI is used in most places around the world, so our use of it allows scientists from disparate regions to use a single standard in communicating scientific data without vocabulary confusion
The thickness of human hair is 0.1 mm.