Answer: 
Explanation:
According to the conservation of linear momentum principle, the initial momentum 
(before the collision) must be equal to the final momentum 
(after the collision):
(1)
In addition, the initial momentum is:
(2)
Where:
is the mass of the comet
is the mass of the asteroid
is the velocity of the comet, which is positive
is the velocity of the asteroid, since it is at rest
And the final momentum is:
(3)
Where:
is the final velocity
Then :
(4)
Isolating :
(5)
Finally:
This is the final velocity, which is also in the positive direction.
combustion of fossil fuels would be the correct answer when dealing with the alteration of the carbon cycle.
Answer:
Because the energy is waning
Explanation: hope this helps
B) Copper atoms have a loosely held free electron in their outer shell that is able to move freely to other atoms.
