PHYSICS EQUATIONS Flashcards
1
Q
Weight =
W = mg
A
Mass x gravitational field strength
2
Q
Work done =
W = Fs
A
Force x distance
3
Q
Force applied to a string =
F = ke
A
Spring constant x extension
4
Q
Moment =
M = Fd
A
Force x distance
5
Q
Pressure =
P = F/a
A
Force ➗ area
6
Q
Distance travelled =
S = vt
A
Speed x time
7
Q
Acceleration =
a = v/t
A
Change in velocity ➗ time taken
8
Q
Resultant force =
F = m/a
A
Mass x acceleration
9
Q
Momentum =
p = mv
A
Mass x velocity
10
Q
Kinetic energy =
E =
A
2
0.5 x mass x speed
2
E = 1/2 mv
k
11
Q
Gravitational potential energy
E = mgh
A
Mass x gravitational field strength x height
12
Q
Power =
P = E/t
A
Energy transferred ➗ time
13
Q
Power =
P = W/t
A
Work done ➗ time
14
Q
Energy transferred =
E = Pt
A
Power x time
15
Q
Efficiency
A
Useful output energy ➗ total output energy
