“Newton’s laws of motion”的概念、定义、翻译、参考文献-科学参考

Newton’s laws of motion

Physics

The three laws of motion on which Newtonian mechanics is based. (1) A body continues in a state of rest or uniform motion in a straight line unless it is acted upon by external forces. (2) The rate of change of momentum of a moving body is proportional to and in the same direction as the force acting on it, i.e. F=d(mv)/dt, where F is the applied force, v is the velocity of the body, and m its mass. If the mass remains constant, F=mdv/dt or F=ma, where a is the acceleration. (3) If one body exerts a force on another, there is an equal and opposite force, called a reaction, exerted on the first body by the second.

Mathematics

Three laws of motion, applicable to particles of constant mass, formulated by Newton in his Principia. They can be stated as follows:
1. (i) A particle continues to be at rest or moving with constant velocity if the total force acting on it is zero.
2. (ii) The rate of change of linear momentum of a particle is proportional to the total force acting on the particle. The linear momentum p of a particle is p=mv, where m is the mass and v is the velocity. So dp/dt = m(dv/dt) = ma, where a is the acceleration. Thus, the second law is usually stated as F = ma, where F is the total force acting on the particle.
3. (iii) Whenever a particle exerts a force on a second particle, the second particle exerts an equal and opposite force on the first. This is often phrased as ‘To every action there is an equal and opposite reaction.

Astronomy

Three laws published in 1687 by I. Newton concerning the motion of bodies:
1. 1. A body continues in a state of uniform rest or motion unless acted upon by an external force.
2. 2. The acceleration produced when a force acts is directly proportional to the force and takes place in the direction in which the force acts.
3. 3. To every action there is an equal and opposite reaction.

Chemical Engineering

See laws of motion.

Philosophy

Newton’s laws of motion state:
1. (i) every body preserves its state of rest, or uniform motion in a straight line, except in so far as it is compelled to change that state by forces impressed upon it;
2. (ii) the rate of change of linear momentum is proportional to the force applied, and takes place in the straight line in which that force acts;
3. (iii) to every action there is an equal and opposite reaction.

单词	Newton’s laws of motion
释义	Newton’s laws of motion Physics The three laws of motion on which Newtonian mechanics is based. (1) A body continues in a state of rest or uniform motion in a straight line unless it is acted upon by external forces. (2) The rate of change of momentum of a moving body is proportional to and in the same direction as the force acting on it, i.e. F=d(mv)/dt, where F is the applied force, v is the velocity of the body, and m its mass. If the mass remains constant, F=mdv/dt or F=ma, where a is the acceleration. (3) If one body exerts a force on another, there is an equal and opposite force, called a reaction, exerted on the first body by the second. Mathematics Three laws of motion, applicable to particles of constant mass, formulated by Newton in his Principia. They can be stated as follows: (i) A particle continues to be at rest or moving with constant velocity if the total force acting on it is zero. (ii) The rate of change of linear momentum of a particle is proportional to the total force acting on the particle. The linear momentum p of a particle is p=mv, where m is the mass and v is the velocity. So dp/dt = m(dv/dt) = ma, where a is the acceleration. Thus, the second law is usually stated as F = ma, where F is the total force acting on the particle. (iii) Whenever a particle exerts a force on a second particle, the second particle exerts an equal and opposite force on the first. This is often phrased as ‘To every action there is an equal and opposite reaction. Astronomy Three laws published in 1687 by I. Newton concerning the motion of bodies: 1. A body continues in a state of uniform rest or motion unless acted upon by an external force. 2. The acceleration produced when a force acts is directly proportional to the force and takes place in the direction in which the force acts. 3. To every action there is an equal and opposite reaction. Chemical Engineering See laws of motion. Philosophy Newton’s laws of motion state: (i) every body preserves its state of rest, or uniform motion in a straight line, except in so far as it is compelled to change that state by forces impressed upon it; (ii) the rate of change of linear momentum is proportional to the force applied, and takes place in the straight line in which that force acts; (iii) to every action there is an equal and opposite reaction.
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