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Aloiza [94]
3 years ago
15

Can a person be moving in a positive direction even if their acceleration vector is negative ?

Physics
2 answers:
Mashutka [201]3 years ago
8 0
Yes a person can be moving in a positive direction even if the acceleration vector is a negative
Irina18 [472]3 years ago
5 0
Yeah a person can be moving a positive diretiion
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The brightest star in the night sky in the northern hemisphere is Sirius. Its distance from Earth is estimated to be 8.7 light y
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Answer:5.11(10)^{13}miles

Explanation:

A light year is a unit of length and is defined as "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. "

In other words: It is the distance that the light travels in a year.  

This unit is equivalent to 5.879(10)^{12}miles, which mathematically is expressed as:

1Ly=5.879(10)^{12}miles

Doing the conversion:

8,7Ly.\frac{5.879(10)^{12}miles}{1Ly}=5.11(10)^{13}miles  This is the distance from Earth to Sirius in miles.

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