Physics IX Cheat Sheet by Ayesha Talib

speed (v) = s/t
average speed = total s/total t
velocity = d/t
average velocity = total d/total t
accele­ration = v-u/t
v = 2πr/t
v = u+at
s = ut+1/2at²
v² = u²+2as

F = ma
p = mv
change in momentum = mv-mu
m

1

v

1

+m

2

v

2

=(m

1

m

2

)v

F = GMm/d²
g = GM/R²
W = mg
W

m

= 1/6 W

e

(thrust) F = mg
Weight­-up­thrust = m
W = m+upthrust
h = 1/2gt²
v² = 2gh
v = gt

work = Fs
E

p

= mgh
E

k

= 1/2mv²
power = W/t /// power = E/t
average power = total E/total t

Nu = 1/T
v = λ/T
v = Nuλ