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Newton's first law of motion
Newton proposed three laws of motion. Newton's 1(first) law of motion-A body continues to be in the state of rest or motion until and unless an external force is applied to change its state.
Balanced forces keep object in its state of motion (moving or at stop). An objects state of motion can be altered when it is subjected to an unbalanced force. This reflects Newtons first law of motion.
It is the Newton's first law of motion.
This is Newton's First Law of Motion. Objects in motion stay in motion because of inertia (refer to the law of inertia for additional help).
Kepler's 1st law of planetary motion state that Each planet moves in an elliptical orbit with the sun at one focus.
The cubes of the average distances of the planets from the sun is proportional to the squares of their periods.
Kepler
Newton's Law of Gravity describes Planetary motion.
That's one of Johannes Kepler's "Laws" of planetary motion.
Kepler's Laws of Planetary Motion.
All 3 of them (Kepler's laws of planetary motion).
Laws of planetary motion.
Laws of Planetary Motion by Johannes Kepler, published 1618.
The laws of planetary motion are attributed to Kepler.
3 laws' of planetary motion
Tycho Brahe :P