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Work quiz

work quiz study guide 7th grade

QuestionAnswer
What is work? The transfer of energy to an object by using a force that causes the object to move in the direction of the force
What is the formula for work? W=f*d
What 2 things must happen to do work on an object? The object moves as a force is applied and the direction of the object's motion is the same as the direction of the force
What is the unit for measuring work? Joules or newton-meter (n*m)
What is power? The rate at which energy is transferred
What is the unit for calculating power? Watts or joules per second (J/s)
What is the formula for calculating power? P=w/t
What is Kinetic Energy? The type of energy a moving object has
Is work being done- Holding a heavy dog in place? No
Is work being done- pulling a nail out of wood and the nail is not moving? No
Is work being done- Carrying a backpack across a room? No
Is work being done- Lifting a backpack from the floor to a table? Yes
Is work being done- Walking up stairs? Yes
Is work being done- Hammering a nail into wood? Yes
Created by: ca28776