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Questions and Answers
What is the relationship between a body's acceleration, mass, and the net force acting on it, according to Newton's second law of motion?
What is the relationship between a body's acceleration, mass, and the net force acting on it, according to Newton's second law of motion?
- Acceleration multiplied by mass equals the net force (correct)
- Acceleration divided by mass equals the net force
- Acceleration minus mass equals the net force
- Acceleration plus mass equals the net force
According to Newton's first law of motion, what happens to a body when no force is acting on it?
According to Newton's first law of motion, what happens to a body when no force is acting on it?
- It accelerates in a straight line
- It remains at rest or in motion at a constant speed in a straight line (correct)
- It moves in a circular path
- It decelerates in a straight line
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?
- The Laws of Motion and Forces
- Philosophiæ Naturalis Principia Mathematica (correct)
- Mathematical Principles of Natural Philosophy
- Scientific Laws of Motion
What is the condition for two bodies exerting forces on each other, according to Newton's third law of motion?
What is the condition for two bodies exerting forces on each other, according to Newton's third law of motion?
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What did Newton use his three laws of motion to investigate and explain?
What did Newton use his three laws of motion to investigate and explain?
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Study Notes
Newton's Laws of Motion
- A body's acceleration is directly proportional to the net force acting on it and inversely proportional to its mass, as stated in Newton's second law of motion.
- When no force is acting on a body, it remains in a state of rest or continues to move with a constant velocity, as stated in Newton's first law of motion.
- Isaac Newton first stated the three laws of motion in his publication "Philosophiæ Naturalis Principia Mathematica" in 1687.
- According to Newton's third law of motion, two bodies exert forces on each other if they are in contact or if one body is exerting a force on the other through a third medium, such as a string or a field.
- Newton used his three laws of motion to investigate and explain the motion of celestial bodies, such as planets and comets, and the behavior of objects on Earth.
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