physics mock p1 equations Flashcards
1
Q
weight
A
mass x g.f.s.
2
Q
pressure
A
force normal to a surface / area of that surface
3
Q
kinetic energy
A
1/2 x mass x velocity^2
4
Q
G.P.E.
A
mass x g.f.s x height
5
Q
power
A
energy, work done/time
p.d. x current
current^2 x resistance
6
Q
density
A
mass/volume
7
Q
energy
A
power x time
charge flow x p.d.
8
Q
charge flow
A
current x time
9
Q
efficiency
A
useful power output/ total power input
useful output energy/ total input energy
10
Q
V=
A
IR
