Formulae Flashcards
1
Q
Density =
A
Mass /volume
2
Q
speed =
A
Distance/ time
3
Q
Average speed
A
total distance/ total time
4
Q
acceleration
A
Change in velocity/ time
5
Q
spring constant
A
force/ extension
6
Q
force
A
mass x acceleration
7
Q
moment of a force
A
force x perpendicular distance
8
Q
impulse
A
force x time
9
Q
resultant force
A
change in momentum / change time
10
Q
kinetic energy
A
half mass x velocity squared
11
Q
Gravitational potential energy
A
Mass x gravity x height
12
Q
work
A
force x distance travelled in direction of force
13
Q
percentage efficiency
A
(Useful output / total input) x 100
14
Q
power
A
work/time
15
Q
pressure (liquid)
A
height x density x gravity
