The fact that $\frac { d A } { d t }$ is a constant is used to explain

A)The speed of a planet around the sun is a constant.
B)Newton's Second Law of Motion
C)Newton's Law of Universal Gravitation
D)Kepler's First Law
E)Kepler's Second Law

Question

The fact that $\frac { d A } { d t }$ is a constant is used to explain

A)The speed of a planet around the sun is a constant.
B)Newton's Second Law of Motion
C)Newton's Law of Universal Gravitation
D)Kepler's First Law
E)Kepler's Second Law

Quizplus · Accepted Answer

Kepler's Second Law, also known as the Law of Areas, states that the line joining a planet and the Sun sweeps out equal areas during equal intervals of time. This implies that $\frac { d A } { d t }$, the rate of area swept out by the line, is constant. This law describes the conservation of angular momentum and explains the varying speed of a planet in its orbit, speeding up when it is closer to the Sun and slowing down when it is farther away, to sweep out equal areas in equal times.

The Fact That dAdt\frac { d A } { d t }dtdA​

The Fact That $\frac { d A } { d t }$