1
Q
How do you calculate work done
A
Force x distance w=fs
2
Q
How do you calculate useful energy
A
Efficiency x total u=et
3
Q
How do you calculate energy
A
Power x time e=pt
4
Q
How do you calculate kinetic energy
A
1/2 x mass x velocity^2
5
Q
How do you calculate gravitational potential energy
A
Mass x gravity x height
6
Q
How do you calculate elastic potential energy
A
1/2 x spring constant x extension
0.5 x k x e
7
Q
How do you calculate power
A
Power = energy/time
Year 9 Physics
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