Application of forces and transfer of energy Flashcards
1
Q
What is the Si unit of energy?
A
Joule (J)
2
Q
What is the principle of conversation of energy?
A
-Energy cannot be destroyed or created, but it can be transferred from one store to another.
-The total energy is an isolated system is constant
3
Q
What is the formula for kinetic store?
A
kg x velocity or motion
4
Q
What is the formula for gravitational potential store?
A
kg x gravitional field strength x vetical height (Note that in earth GFS is always 10)
5
Q
What is the formula for weight?
A
Mass x gravity (10 for earth)
6
Q
What is the formula for Pressure?
A
Force applied/area
7
Q
What is the formula for work done?
A
Force applied x distance travelled
