WEP Flashcards
1
Q
What is work done?
A
Product of a force and its displacement in the direction of a force
2
Q
What is energy?
A
the ability to do work
3
Q
What is the principle of conservation of energy?
A
energy can neither be created nor destroyed in any process, it can only be transformed from one form to another and transformed from one body to another
4
Q
What is the graphical representation of work done?
A
Area under Force-displacement graph
5
Q
What is power?
A
Work done per unit time
6
Q
What is efficiency?
A
The ratio of useful energy output of a machine to energy input
7
Q
What is work-energy theorem?
A
net work done by external forces acting on a particle is equal to the change in kinetic energy of the particle
8
Q
What is watt?
A
rate of transfer of energy of one joule per second
