acceleration

• Nom désignant l'action d'accélérer, c'est-à-dire d'augmenter la vitesse d'un mouvement ou d'un processus, ainsi qu'en physique, la variation de la vitesse au cours du temps (grandeur vectorielle).

A noun referring to an increase in the rate of change, the act of speeding up, or, in physics, the rate at which velocity changes over time.

1. Physics: Rate of velocity changeB2formalscientific

   The rate at which the velocity of an object changes over time.

   Accélération (physique)

   • The car's acceleration from 0 to 60 mph took only 5 seconds.
   • Gravity causes a constant acceleration of 9.8 m/s² on Earth.
   • The experiment measured the acceleration of the falling object.

2. Increase in speedB1formal

   The act or process of moving faster or increasing speed.

   accélération

   • The driver felt a strong acceleration when pressing the gas pedal.
   • The rocket's acceleration pushed the astronauts back into their seats.
   • The cyclist's acceleration helped him win the race.

   Synonymesquickeningspeedup

   Antonymesdecelerationslowing

3. Increase in rate of changeB2formal

   An increase in the speed or rate at which something happens or develops.

   accélération

   • There has been an acceleration in the pace of technological innovation.
   • The company experienced an acceleration in sales growth this quarter.
   • Climate change is causing an acceleration in sea level rise.

   Synonymesescalationexpansiongrowthincreaseintensificationquickeningspeedupstep-up

   Antonymesdecelerationretardationslowing