The star nearest to our sun is Proxima Centauri, at a distance of 4.3 light-years from the sun. How far away, in km, is Proxima
2 answers:
Answer:
Explanation:
A light year is a unit of length and is defined as <em>"the distance a photon would travel in vacuum during a Julian year at the speed of light at an infinite distance from any gravitational field or magnetic field. </em>"
In other words: It is the distance that the light travels in a year.
This unit is equivalent to , which mathematically is expressed as:
Doing the conversion:
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By definition the friction force is defined as
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Frictional Constant
N = Normal Force -> mg
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E = F*v
Where,
Force
v = Velocity.
Then replacing with our values we have that,
F = 0.5 *34
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The energy then would be,
E = f v
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