Every year the Earth travels about 10⁹ km as it orbits the Sun. What is Earth's average speed in km/h?

검증된 단계별 안내

Determine the total distance traveled by the Earth in one year, which is given as 10⁹ km.

Recall the formula for average speed:

v

_avg = dt, where

d

is the total distance and

t

is the total time.

Convert the time for one year into hours. Since there are 365 days in a year (ignoring leap years), and each day has 24 hours, calculate the total time in hours:

t = 365 	imes 24

hours.

Substitute the values for

d

(10⁹ km) and

t

(calculated in the previous step) into the formula for average speed:

v

_avg = 10⁹t.

Simplify the expression to find the Earth's average speed in km/h.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Orbital Motion

Orbital motion refers to the movement of an object in a curved path around a central body due to gravitational forces. In the case of Earth, it orbits the Sun in an elliptical path, which is governed by Kepler's laws of planetary motion. Understanding this concept is essential for calculating the distance traveled by Earth in its orbit.

Average Speed

Average speed is defined as the total distance traveled divided by the total time taken. It is a scalar quantity that provides a measure of how fast an object is moving, regardless of the direction. In this context, calculating Earth's average speed involves dividing the distance it travels in a year by the number of hours in a year.

Time Conversion

Time conversion is the process of changing units of time from one form to another, such as from years to hours. Since the question involves calculating speed over a yearly distance, it is necessary to convert the time frame of one year into hours to find the average speed in km/h. There are 24 hours in a day and approximately 365 days in a year, leading to a total of about 8,760 hours in a year.