1.

An object of 30 kg is moved with a velocity of 2 m/s on a horizontal smooth surface. What is the velocity of the block for 4 seconds if force of 40 N is applied on it in the direction of force?

Answer» GIVEN
F=40N
m=30kg
then a = F/m
         a= 40/30 = 4/3 m/s^2
V=u+at
  =2+ 4/3 X 4
  = 22/3


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