Work and Power Flashcards
1
Q
What is Work?
A
The process of transferring energy
2
Q
What is Power?
A
The rate at which work is done; the rate at which energy is transfered
3
Q
In what situations is work done?
A
Work is done when a force is applied and the object moves in response to that force
4
Q
In what situations is work not being done?
A
When a force is applied but no motion occurs, or when the applied force is perpendicular to the motion of the object
5
Q
How is the SI unit for Work and Energy derived?
A
Joule – Nm– kg m^2/s^2
6
Q
What is the difference between positive and negative work?
A
Positive work is done by a force that acts in the direction of the object’s displacement.
Negative work is done by a force that acts in the opposite direction of the object’s displacement
