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1. The table below shows the orbital speed of four planets.

\begin{tabular}{|l|l|l|}
\hline
Name of Planet & \begin{tabular}{l}
Average orbital speed \\
[tex]$( km / s )$[/tex]
\end{tabular} \\
\hline
Planet J & 13.07 \\
\hline
Planet E & 29.78 \\
\hline
Planet Y & 47.36 \\
\hline
Planet M & 24.00 \\
\hline
\end{tabular}

Considering Kepler's Laws, which planet is likely closer to the sun?

A. Planet E
B. Planet Y
C. Planet J
D. Planet M



Answer :

GinnyAnswer
To determine which planet is likely closer to the sun, we can use Kepler's Laws, particularly the third law, which states that a planet's distance from the sun is inversely proportional to its orbital speed. This means that a planet with a higher orbital speed tends to be closer to the sun.

Given the orbital speeds of the planets:

- Planet J: 13.07 km/s
- Planet E: 29.78 km/s
- Planet Y: 47.36 km/s
- Planet M: 24.00 km/s

We need to compare their orbital speeds to determine which planet is moving the fastest, as this planet will likely be closest to the sun.

Looking at the values:
- Planet J has an orbital speed of 13.07 km/s.
- Planet E has an orbital speed of 29.78 km/s.
- Planet Y has an orbital speed of 47.36 km/s.
- Planet M has an orbital speed of 24.00 km/s.

Among these, Planet Y has the highest orbital speed of 47.36 km/s.

According to Kepler's Laws, since Planet Y has the highest orbital speed, it is likely the closest to the sun.

Therefore, the planet that is likely closer to the sun is:
[tex]\[ \boxed{\text{Planet Y}} \][/tex]

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