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Image result for Which describes the changes in the earth's motion?

Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.

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The speed increases from X to W because a component of the gravitational force acts in the direction of the velocity.

What is the gravitational force?

The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe

What is the velocity in a simple definition?

rapidity of motion or operation; swiftness; speed: a high wind velocity. Mechanics. the time rate of change of position of a body in a specified direction. the rate of speed with which something happens; rapidity of action or reaction.

Why does the speed of earth increase, when it goes towards the sun in an elliptical orbit?

When the earth goes towards the sun, that component of the gravitational force now remains along the direction of motion. So that its speed increases.

Learn more about earth's motion here:https://brainly.com/question/12207320

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