Physics Equations Flashcards
1
Q
weight =
A
mass x gravitational field strength
2
Q
work done =
A
force x distance along the line of action of the force
3
Q
force applied to a spring =
A
spring constant x extension
4
Q
moment of a force =
A
force x distance normal to direction of force
5
Q
pressure =
A
force normal to a surface / area of that surface
6
Q
distance travelled =
A
speed x time
7
Q
acceleration =
A
change in velocity / time taken
8
Q
resultant force =
A
mass x acceleration
9
Q
momentum =
A
mass x velocity
10
Q
kinetic energy =
A
0.5 x mass x speed squared
11
Q
gravitational potential energy =
A
mass x gravitational field strength x height
12
Q
(1) power =
A
energy transferred / time
13
Q
(2) power =
A
work done / time
14
Q
(1) efficiency =
A
useful output energy transfer / total input energy transfer
15
Q
(2) efficiency =
A
useful power output / total power input
