Ingrtia :-the imer terntens to Yemajn in a State frest
a body
oo f urifeom motion unless an extonal unbalanced force at
it is caled inatia Depends en mass body
i) Ineitia 4 rest - Mango fall whenfovwad
brancb iss shook.
Inotia motion - We ten d to fal when the bus stups
i} hentia g direckion - Mudgucid oQ used in
NEWTON'S FIRST AW
It stotes tat euerH bdy continues to be in state vest o
uniform moton uless an extetnag unbalane d toce ated on it
A
SECOND LAN
It states that 4e ate g woomentum fa bo dy
is directly propotion al
change
hoge
tenai force acting
tie chang in momentum tase ptace in tes divectioo
appied torce.
'
Considet aa body of Mass M with ity 'uan
exteinal
body
force on ît change velcity to
acing
change io momentu
By Neuston's seiond as, de
dt
dt
md (o)
ay k ) dt
, Late
Aloqe
Icqe tyce _acting fora small duation tima fi callad
an inpusiue force .Oaangle - hawmo
de
uquse , Fdt - dp
cavge n moMNtUWO.
a cucketet catcs a balhe low eHs ig hand
becouse uhen tu tie iteuaû isneaseclto osinyease
fee usill Ase much salkot. (dp Fdt)
)A peSon falling from a huig ht recyi ves more înjusues en
cemanted ftcby 4han on a heab o sand because ta
hap sand givs usay and the tima huter9al fexfos change
momentum toce dueseg.
NEWTON S THIRD LAW OF MOTION .- FoY
an equal and oppoite veaction. every actionthaais
Action and veaction donot cancel eachothe
differert bodies because hey act on
> Action Reaction taee place simul the is no tiwalag
betweenthm
-R.
A
ma