Definition of ACCELERATION


Acceleration is a noun that primarily refers to the rate of change of velocity of an object over time, indicating how quickly its speed or direction is changing. It can be understood in various contexts:

Physics and Mechanics: Newton’s Second Law: In physics, acceleration is defined as the derivative of velocity with respect to time, expressed in units such as meters per second squared (m/s²) or kilometers per hour per second (km/h/s).

Force and Mass: Acceleration occurs when an object experiences a net force, proportional to the magnitude of the force and inversely proportional to the object’s mass, as described by Newton’s second law of motion, F = ma.

Kinematics and Dynamics: Uniform Acceleration: In kinematics, uniform acceleration describes motion in which the rate of change of velocity remains constant over time, resulting in a linear increase or decrease in speed.

Variable Acceleration: Non-uniform or variable acceleration occurs when the rate of change of velocity varies over time, leading to curved or non-linear motion trajectories.

Engineering and Technology: Vehicle Dynamics ; Acceleration is a key parameter in vehicle dynamics, including automobiles, aircraft, spacecraft, and other transportation systems, influencing performance, maneuverability, fuel efficiency, and safety.

Acceleration Sensors: Accelerometers are sensors used to measure acceleration in various applications, such as inertial navigation systems, motion tracking devices, automotive airbag systems, and consumer electronics.

Everyday Experience and Human Physiology: Gravitational Acceleration: On Earth, objects experience gravitational acceleration towards the center of the planet, approximately 9.81 meters per second squared (m/s²), influencing activities such as walking, running, jumping, and falling.

Biomechanics: Acceleration is relevant in biomechanics and human physiology, affecting sports performance, physical activities, and responses to external stimuli, such as sudden movements or changes in posture.

In summary, acceleration is a noun that describes the rate of change of velocity of an object over time, with applications in physics, mechanics, engineering, technology, human physiology, and everyday experience, influencing motion, dynamics, performance, and safety in various contexts.

Examples of ACCELERATION in a sentence

  • The car’s acceleration from 0 to 60 mph was impressive, thanks to its powerful engine.
  • He felt a sudden acceleration as the roller coaster plunged down the steep track.
  • The acceleration of technological advancements has revolutionized various industries.
  • The scientist studied the acceleration of objects in free fall to understand the principles of gravity.
  • The company implemented strategies to accelerate the production process and meet growing demand.
  • She could feel her heart rate quicken with the acceleration of the music tempo.
  • The acceleration of economic growth in the region led to increased investment and job creation.
  • The athlete’s acceleration off the starting line was crucial for winning the race.


Let’s explore the etymology of the word acceleration:

  • Latin: The word “acceleration” has its roots in Latin. The Latin verb “accelerare” consists of two components: “ad,” meaning “to,” and “celer,” meaning “swift” or “fast.” So, “accelerare” literally means “to make swift” or “to quicken.”
  • French: The term transitioned into Middle French as “accelerer,” retaining the same basic meaning of increasing speed or velocity.
  • English: By the late 15th century, during the Middle English period, “acceleration” made its way into the English language with a similar meaning, referring to the act of increasing speed or the rate of motion.

In summary, “acceleration” originates from the Latin “accelerare,” where “ad” denotes direction toward and “celer” conveys swiftness. The word has undergone a linguistic journey through Middle French before being adopted into English. In its contemporary usage, “acceleration” is a term commonly employed in physics to describe the rate of change of velocity with respect to time


  • Speed Up
  • Quickening
  • Escalation
  • Hastening
  • Advancement
  • Intensification
  • Surge
  • Quickening


  • Deceleration
  • Slowdown
  • Retardation
  • Slow
  • Decrement
  • Braking
  • Diminution
  • Gradualness


  • Velocity
  • Momentum
  • Rapidity
  • Propel
  • Thrust
  • Impetus
  • Swiftness
  • Burst

🌐 🇬🇧 ACCELERATION in other languages

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