Ascension Composite Cadet Competition Practice Test

This question tests how work is measured in physics. Work is the transfer of energy that occurs when a force acts on an object as it moves through a distance. The SI unit that measures this energy transfer is the joule. One joule is defined as the work done when a force of one newton moves an object one meter, so it’s equal to a newton-meter. This clarifies why work isn’t measured in newtons (that’s a unit of force), watts (a unit of power, the rate of doing work), or pascals (a unit of pressure, force per area). So the unit for work is the joule.