Work, Energy, and Power Test-Questions and Answers Graded A+

Work, Energy, and Power Test-Questions and Answers Graded A+ Define Work - ANSWER-A force acting over a distance Define Negative Work - ANSWER-When a force is acting on an object to slow it down Define Power - ANSWER-Rate at which work is done Define Energy - ANSWER-The capacity to do work Define Potential Energy - ANSWER-The energy stored due to an object's position Define Gravitational Potential Energy - ANSWER-Energy stored as a result of an object's vertical position Define Chemical Potential Energy - ANSWER-Energy stored in chemicals. Ex: a barrel of oil, the human body, etc Define Spring Potential Energy - ANSWER-Energy stored by compressing a spring Define Elastic Potential Energy - ANSWER-Energy stored in an elastic material as it is stretched. Define Kinetic Energy - ANSWER-The energy of motion Define Total Mechanical Energy - ANSWER-The total amount of kinetic and potential energies present in a system Define Law of Conservation of Energy - ANSWER-Energy can neither be created nor destroyed Define Work-Energy Theorem - ANSWER-Work done by an outside force is equal to the change in the kinetic energy of a system Is work being done in the following situation: -Joe applies a force to the wall and gets tired - ANSWER-No, because the wall was not displaced Is work being done in the following situation: -A book falls from the table and free falls to the ground - ANSWER-Yes work is done because there is a displacement in the direction of the force of gravity Is work being done in the following situation: -A waiter carries a loaded tray above his head by one arm straight across the room - ANSWER-Yes, force of gravity is acting upon the tray Is work being done in the following situation: -A rocket accelerates through space - ANSWER-Yes, there is a force (the expelled gases push on the rocket) which causes the rocket to be displaced through space Is the work done in the following scenarios positive or negative? -Joe hits the gas pedal in his car and accelerates down the road - ANSWER-Positive work done