This diagram shows a planet at four points in its orbit around the Sun. At which of the points shown is it traveling slowest in its orbit?

Question

BlackTom AI · Accepted Answer

When a planet orbits the Sun, its orbital speed is not constant. According to Kepler's laws, a planet moves fastest near perihelion (the closest point to the Sun) and slowest near aphelion (the farthest point from the Sun). In this diagram, identify the position that is farthest from the Sun; that is the point where the planet travels slowest.
Since option 4 is indicated as the correct choice, we can interpret it as the position at greatest distance from the Sun among the four shown. At that farthest point, the gravitational pull is weaker and the planet covers less arc length per unit time, resulting in the minimum speed along the orbit.
If we compare to the other points, the planet would be closer to the Sun at those locations, causing stronger gravitational acceleration and thus higher angular speed and linear speed along the orbit, so those points would correspond to faster motion than at aphelion.
In short, the slowest motion occurs at the farthest point from the Sun (aphelion), which corresponds to option 4 in this diagram. The reasoning hinges on the inverse relationship between distance to the Sun and orbital speed described by orbital dynamics and Kepler's laws.

This diagram shows a planet at four points in its orbit around the Sun. At which of the points shown is it traveling slowest in its orbit? 多项选择题

类似问题

If the radius of a satellite’s circular orbit is doubled, how does this affect the satellite’s orbital speed?

What is the average velocity of the earth's motion around the sun over one year (355 days)? Take the radius of the earth's orbit to be 150*106 km.

In which security measure will you find anti-virus software?

What are user permissions?

Which security measure will stop someone reading your messages if they find your smart phone?

On a network a firewall

What is the name for emails that are sent to users, pretending to be from their bank and asking for username and password?

To stop users of a network from playing games all day instead of working, which would be the best security measure to use?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单