A planet orbits the sun in an elliptical path. What remains constant for the pla

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Question: A planet orbits the sun in an elliptical path. What remains constant for the planet as it moves in its orbit?

Options:

Correct Answer: Angular momentum

Solution:

Angular momentum remains constant for a planet in orbit due to the conservation of angular momentum.

A planet orbits the sun in an elliptical path. What remains constant for the planet as it moves in its orbit?

A planet orbits the sun in an elliptical path. What remains constant for the planet as it moves in its orbit?

Step 1: Understand that a planet moves around the sun in a path that is not a perfect circle, but an ellipse.
Step 2: Learn about angular momentum, which is a measure of how much motion an object has while rotating around a point (in this case, the sun).
Step 3: Know that angular momentum depends on the planet's speed and how far it is from the sun.
Step 4: Realize that as the planet moves closer to the sun, it speeds up, and as it moves farther away, it slows down.
Step 5: Understand that even though the speed changes, the total angular momentum of the planet remains the same throughout its orbit.
Step 6: Conclude that the conservation of angular momentum means that the angular momentum does not change as the planet orbits the sun.

Conservation of Angular Momentum – In an elliptical orbit, a planet's angular momentum remains constant due to the conservation laws of physics, meaning that the product of its mass, velocity, and distance from the sun does not change.