Module 3 - Work And Energy Flashcards
0
Q
Energy
A
The stored ability to do work.
1
Q
1 joule
A
The work done when a force of 1 newton moves an object 1 metre in the direction of the force.
2
Q
Conservation of energy
A
Energy may be transferred from one form to another, but energy cannot be created or destroyed.
The total amount of energy in a closed system cannot change.
3
Q
Gravitational potential energy
A
The energy stored in an object (the work an object can do) as a result of its position in a gravitational field.
4
Q
Kinetic energy
A
The work an object can do as a result of its speed.
5
Q
Power
A
The rate of work done, or energy transferred per second.
6
Q
One watt
A
One joule per second.
7
Q
Stress
A
Force per unit cross-sectional area.
8
Q
Strain
A
The extension per unit length.
