The force required to keep an object moving with a same velocity is _______ if an object
of mass 3 kg that is sliding with a constant velocity of 3 m/s on a frictionless horizontal
table.

Solution
The velocity of the object is constant.
Now acceleration =$a=\frac{dv}{dt}$
now
$dv=0$
hence
$$\begin{gathered} a=0 \\ now, \\ Force acting on the object = F=ma=0 \end{gathered}$$
The force required to keep an object moving with a same velocity is ___ZERO____ if an object
of mass 3 kg that is sliding with a constant velocity of 3 m/s on a frictionless horizontal
table.