Chapter 10: Work, Energy And Power Flashcards
1
Q
Equation for work
A
Work done (J)= force (N) x distance moved in the direction of the force (m)
2
Q
What is the law of conservation of energy?
A
Energy cannot be created or destroyed, only transferred
3
Q
What is energy?
A
The capacity to do work or to heat something up (measured in joules).
4
Q
Equation linking power, force and velocity
A
Power= F x v
5
Q
What is efficiency?
A
The ratio of useful output energy to total input energy for a given system
