Question

a body is moving with a velocity of 10m/s. If the motion is uniform what will be its velocity after 10s

Answer 1

As the motion is uniform, that mean acceleration is zero.
From first law, v = u + at
a= 0
then, v= u, means velocity always remains the same, here 10 m/s

Answer 2

As we know that there is zero acceleration in uniform motion
So a=0 and From first equation:- v=u+at

Then we get
V=U
and from above we know that velocity will be remain same i.e 10m/s