Earth orbiting the Sun. Illustration showing the Earth moving around the Sun, its orbit determined by gravitational attraction. Newton's first law of motion states that a body remains at rest or in motion with a constant velocity unless an external force acts on the body. The gravitational force of attraction between the Earth and the Sun pulls the Earth into orbit around the Sun. A force that pulls an object towards the centre of a circle is called a centripetal force.

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TOP26152474

Source:

達志影像

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RM

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須由TPG 完整授權

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