Siyraghey
Ta'n '''siyraghey''', ny '''bieauaghey''' keayrtyn, ny chormid arraghee t'ayn tra dy vel [[tappeeys]] ny [[Bieauid (fishig)|bieauid]] nhee arraghey.

Ta formley ry-gheddin lesh y mooad d'obbraghey magh myr ta:
:bieauaghey = arraghey bieauid / am gowit gys y bieauid d'arraghey
ny
:<math>
\mathbf{\bar{a}} = {\mathbf{v} - \mathbf{u} \over t}
</math>

'Sy chooish shoh 
:'''a''' = bieauaghey
:'''u''' = bieauid hoshee
:'''v''' = bieauid yerrinagh
:'''t''' = am gowit

T'ad ny h-[[Unnidyn bieauaghey|unnidyn]] ta gowit lesh y bieauaghey na meaderyn 'sy tullagh ny kilomeaderyn 'syn oor myr ta m/s as km/h.

{{bun}}

[[Ronney:Fishig]]
Ta'n siyraghey, ny bieauaghey keayrtyn, ny chormid arraghee t'ayn tra dy vel tappeeys ny bieauid nhee arraghey.

Ta formley ry-gheddin lesh y mooad d'obbraghey magh myr ta:
bieauaghey = arraghey bieauid / am gowit gys y bieauid d'arraghey
ny

'Sy chooish shoh 
a = bieauaghey
u = bieauid hoshee
v = bieauid yerrinagh
t = am gowit

T'ad ny h-unnidyn ta gowit lesh y bieauaghey na meaderyn 'sy tullagh ny kilomeaderyn 'syn oor myr ta m/s as km/h.

Ronney:Fishig