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A BODY HAS A VELOCITY OF 20M PER S.IF IT UNIFORMILY RETARDS AT THE RATE OF 10M/S^2 .FIND THE VELOCITY OF THE BODY AFTER 2 SEC?
u=20m/s.
a= -10m/s^2.(since retardation)
t=2s.
we know, v=u+at
final velocity,v =20-10*2
  =0m/s.
so, the body will come to rest after 2s.


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