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Questions and Answers
According to Newton's laws of motion, what happens to a body unless acted upon by a force?
According to Newton's laws of motion, what happens to a body unless acted upon by a force?
- Changes color
- Remains at rest or in motion at a constant speed in a straight line (correct)
- Moves in a circular path
- Accelerates constantly
What is the relationship between a body's acceleration, mass, and net force according to Newton's laws of motion?
What is the relationship between a body's acceleration, mass, and net force according to Newton's laws of motion?
- Acceleration plus mass equals net force
- Acceleration multiplied by mass equals net force (correct)
- Acceleration minus mass equals net force
- Acceleration divided by mass equals net force
What is the magnitude and direction of forces exerted by two bodies on each other according to Newton's laws of motion?
What is the magnitude and direction of forces exerted by two bodies on each other according to Newton's laws of motion?
- Same magnitude and same direction
- Different magnitudes and same direction
- Different magnitudes and opposite directions
- Same magnitude but opposite directions (correct)
In which publication did Isaac Newton first state the three laws of motion?
In which publication did Isaac Newton first state the three laws of motion?
What did Newton use his laws of motion to investigate and explain?
What did Newton use his laws of motion to investigate and explain?
According to Newton's first law of motion, what happens to a body unless acted upon by a force?
According to Newton's first law of motion, what happens to a body unless acted upon by a force?
What does the second law of motion state about the relationship between a body's acceleration, mass, and the net force acting on it?
What does the second law of motion state about the relationship between a body's acceleration, mass, and the net force acting on it?
According to Newton's third law of motion, what can be said about the forces exerted by two bodies on each other?
According to Newton's third law of motion, what can be said about the forces exerted by two bodies on each other?
In which publication did Isaac Newton first state the three laws of motion?
In which publication did Isaac Newton first state the three laws of motion?
What did Newton use the three laws of motion to investigate and explain?
What did Newton use the three laws of motion to investigate and explain?
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Study Notes
Newton's Laws of Motion
- A body remains at rest or continues to move with a constant velocity unless acted upon by an external force, according to Newton's First Law of Motion.
- The acceleration of a body is directly proportional to the net force acting on it and inversely proportional to its mass, as stated by Newton's Second Law of Motion (F = ma).
- The forces exerted by two bodies on each other are equal in magnitude and opposite in direction, as described by Newton's Third Law of Motion.
Publication and Application
- Isaac Newton first stated the three laws of motion in his publication "Philosophiæ Naturalis Principia Mathematica" in 1687.
- Newton used his laws of motion to investigate and explain the motion of celestial bodies, such as the Earth, Moon, and planets.
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