physics equations Flashcards
average speed
total distance travelled/
total time taken
m/s
acceleration
∆v/
∆t
m/s^2
g (gravitational field strength)
W/
m
N/kg
weight/mass
9.8/ 10
density (p)
m/
v
mass/volume
kg/m^3
spring constant
k = F/
x
force applied x length
N/m
moment
(force) x (perpendicular distance from pivot)
Nm
momentum (p)
the product of mass and velocity
m.v
mass x velocity
kg*m/s
impulse
a certain amount of force you apply for a certain amount of time to cause a change in momentum
F*∆t
resultant force as the change in momentum per unit time
∆p
∆t
kinetic energy
the energy in moving objects, every moving object has kinetic energy. It is also called movement energy.
= 1/2mv^2
J
gravitational potential energy
mg∆h
mass x __(gravitational field strength/)_ x height
work
(W)
W= F x d
Force x distance
efficiency
(e)
(energy output)/ x 100%
(energy input)
or
(power output) / x 100%
(power input)
Power
(P)
E/
t
(W)atts
pressure
(P)
F/A
force/area
(Pa)scal
