# TOEFL IBT – Physics

Vocabulary is promordial in order to improve your TOEFL score. Remember, Preparation is the key to succeed !

This vocabulary will be useful if you ever take a physics course in school, for expanding your English vocabulary, or especially for any number of English language exams you may take. Here we will look at the most commonly used words in the field, along with their French translations.

 acceleration the rate at which the velocity of a body changes with time We achieved this acceleration over a distance of less than one millimeter. l’accélération balanced force equal force acting on an object in different directions The balanced forces are inward gravitational force and an outward force due to the pressure gradient within the star. la force équilibrée centripetal force a force that causes an object to move in a cycle The centripetal force demanded by the curved motion is also shown above. la force centripète energy the capacity of a physical system to do work Its energy could change the rate at which the universe expands. l’énergie force push or pull on an object Although it survived, gravitational forces shattered it into several pieces. la force free fall when the only force acting on an object is gravity All these objects are in free fall, not zero gravity. la chute libre friction the force between two rubbing surfaces The Teflon reduces the friction of the skin against the sock. la friction gravity the force that pulls objects towards each other A sink drains because gravity pulls the water through the pipes. la gravitation inertia Newton’s first law of motion that states that an object in motion stays in motion But inertia, however, has it leaning in that direction. l’inertie kinetic energy the mechanical energy that a body has by virtue of its motion When transferred to the arrow it is referred to as kinetic energy. l’énergie cinétique Law of Conservation of Energy the law that states that energy cannot be created or destroyed but can be changed from one form to another In the table scenario, I apply the Law of Conservation of Energy. la loi des économies d’énergies momentum the product of a body’s mass and its velocity Yet the momentum for an alternative force seems durable this time. l’élan motion the state in which one object’s distance from another is changing Sandy sets the wheels in motion, but then backs out. le mouvement net force the overall force of an object But the tension is not the same as the net force. la force nette Newton’s second law of motion the acceleration of an object depends on the mass of the object and the amount of force applied Newton’s second law of motion states that F=ma, or force equals mass times acceleration. la seconde loi de mouvement de Newton Newton’s third law of motion for every action there is an equal and opposite reaction While he did not specify that these forces be equal, it was still an early version of Newton’s third law of motion. la troisième loi de mouvement de Newton potential energy the mechanical energy that a body has Fuel contains potential energy realized by burning it to drive an engine. l’énergie potentielle speed the distance an object travels per unit of time The increased speed induces disturbances in the Earth’s magnetosphere. la vitesse terminal velocity the maximum speed possible while free falling The terminal velocity has nothing to do with the bullet’s initial velocity. la vitesse finale velocity a speed in any direction The stunt is controlled by a computer that manages wind velocity. la vitesse
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