Work/Power Flashcards
1
Q
What is work measured in?
A
J (joules)
2
Q
What is power measured in?
A
W (watts)
3
Q
If the object is beneath the reference point what is the sign of the potential energy?
A
Negative
Height is negative in equation
4
Q
If the object is above the reference point what is the potential energy
A
Positive
Height is positive in equation
5
Q
When can you use the conservation of energy equation?
A
When the amount of energy put in equals the amount of energy taken out (no force applied, no force of friction) ex: a ball falling and only gravity working on it ( potential energy converted to kinetic energy but still no energy taken out)
