Definition

1. Noun:
   • A fundamental principle of classical mechanics: The second law of motion states that the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass. The direction of the acceleration is in the direction of the net force.

Usage

• The second law of motion is typically used in scientific, engineering, and educational contexts to describe and calculate the motion of objects when forces are applied.
• It is a core component of Newtonian physics and is often expressed by the formula F = ma (force equals mass times acceleration).

Examples

• Noun:
  • According to Newton's second law of motion, a stronger push on a cart will produce a greater acceleration.
  • The physics problem required applying the second law of motion to find the net force acting on the sled.

Advanced Usage

• "To obey the second law of motion": Describes a system or object whose behavior is correctly predicted by this law.
  • The spacecraft's trajectory was calculated to perfectly obey the second law of motion.
• Conceptual Formulation: Often discussed in terms of the rate of change of momentum (p = mv), where the law is formulated as F = dp/dt (force equals the time rate of change of momentum).

Variants and Related Words

• Newton's second law: A common synonym used interchangeably with "second law of motion."
• Law of acceleration: Another descriptive name for this principle.

Synonyms

• Newton's second law
• Law of acceleration

Related Phrases

• F = ma: The iconic mathematical equation representing the second law of motion.
• Net force: A key concept within the law, referring to the vector sum of all forces acting on an object.

Noun

1. the rate of change of momentum is proportional to the imposed force and goes in the direction of the force